Least Concern is an animal classification established by the International Union for the Conservation. Species classified as “least concern” are not a focus of conservationists because they don’t appear to be facing any imminent threats. The IUCN will not add species to the Least Concern list unless scientists have evaluated them. Additionally, LC animals are not red-listed, but they still have a category.
Currently, 14,033 species of animals are on the Least Concern list.
Least Concern Species
Aardvark
Can move 2ft of soil in just 15 seconds!
Aardwolf
The aardwolf has five toes on its front paws
Abyssinian Guinea Pig
They are one of the oldest breeds of guinea pig
Acadian Flycatcher
Their nests are sloppily held together and have an abandoned appearance
Adélie Penguin
Eats up to 2kg of food per day!
Admiral Butterfly
Stunningly beautiful wings
African Bullfrog
The African bullfrog is one of only three species of frog that have “teeth.”
African Civet
Secretes up to 4g of musk every week!
African Clawed Frog
African clawed frogs were used as pregnancy testers from the 1930s to the early 1960s.
African Fish Eagle
African fish eagles belong to the genus of sea eagles
African Jacana
The males raise the young
African Palm Civet
Solitary but gathers in groups!
African Tree Toad
Found in tropical moist lowland forests!
Agama Lizard
The agama forms small social groups that contain both dominant and subordinate males.
Agouti
The agouti is one of the only animals that can crack open Brazil nut pods!
Albino (Amelanistic) Corn Snake
Albino corn snakes make great beginner snakes.
American Alligator
They have two sets of eyelids!
Alligator Gar
The alligator gar has toxic eggs to protect against predators
Alpaca
They can spit up to 10 feet.
Alpine Goat
Alpine goats are the most common type of goat used for milk, cheese, and other dairy products
Amano Shrimp
Popular kept in aquariums to keep them clean
Amazon Tree Boa
Amazon tree boas come in a rainbow of colors.
Amazonian Royal Flycatcher
They use their bright royal-looking crests during mating season
American Robin
The color “Robin egg blue” is named after the hue of their eggs.
American Toad
They secrete a milky poisonous liquid that can make many animals sick.
Amethystine Python (Scrub Python)
Their milky-iridescent scales have a purplish hue in the light, reminiscent of the gemstone.
Anaconda
They are the heaviest snake in the world
Anglerfish
The anglerfish has a glowing lure on its head to attract unsuspecting prey
Angora Ferret
Was created as an accident.
Angora Goat
Each adult Angora goat produces about 12 inches of mohair annually while kids have about 8 inches.
Anna’s Hummingbird
Anna's Hummingbird wings beat 40-50 times per second during normal flight
Anole Lizard
There are just under 400 species, several of which change color.
Ant
First evolved 100 million years ago!
Antarctic Scale Worm
Similar in length to a rat or squirrel
Anteater
Has the longest tongue of any animal in relation to its body size!
Antelope
Renew their horns every year!
Arabian Cobra
The Arabian cobra is the only true cobra species that can be found in the Arabian Peninsula.
Arctic Char
Arctic char is the northern-most fish; no other fish lives anywhere further north!
Arctic Fox
Extremely thick winter fur!
Arctic Hare
Eats berries found in the snow!
Arctic Wolf
Incredibly versatile and adaptive!
Argentine Black and White Tegu
giant lizard kept as pets
Arizona Coral Snake
The Arizona coral snake is among the most venomous snakes of North America.
Armadillo Lizard
They communicate through a series of tongue flicking, head bobbing and tail wagging, among other methods.
Armyworm
They are so named because they "march" in armies of worms from one crop to another in search of food
Asian Vine Snake
This snake chews on its victims to release venom.
Asian Water Monitor
The Asian water monitor is the second heaviest lizard in the world!
Asp
It was the symbol of royalty in Egypt, and its bite was used for the execution of criminals in Greco-Roman times.
Assassin Bug
The assassin bug is named for its quick strike ability.
Atlantic Salmon
These fish are known for their ability to leap and fight when hooked.
Atlas Beetle
Male Atlas beetles have prominent horns that are three times that of females.
Australian Firehawk
Australian firehawks are the arsonists of the avian world!
Australian Flathead Perch
This small fish fetches a high price tag, with individuals selling from $1,000 to $5,000.
Australian Gecko
Geckos have 100 teeth and continually replace them.
Avocet
Has a curved, upturned beak!
Baboon
Can travel more than four miles a day!
Baird’s Rat Snake
Baird’s rat snake subdues its prey through suffocation.
Bald Eagle
Bald eagles have 20/5 vision, which is much sharper than a human's.
Bamboo Rat
They make a "boop, boop, boop" sound when danger draws near their burrow.
Banana Eel
Named for the yellow body and brown spots that make it look like a banana.
Banana Spider
People spin clothing and fishing nets out of these spiders’ silk.
Banded Krait
What often prevents more people from falling victim is that the banded krait does not always inject venom in a defensive bite. It saves the venom for hunting prey instead.
Banded Water Snake
Some water snakes defend themselves violently.
Barb
There are over 1768 known species!
Barn Owl
Found everywhere around the world!
Barn Spider
Common barn dwelling spider
Barn Swallow
Older offspring help care for new hatchlings.
Barracuda
Can grow to nearly 2 meters long!
Barramundi Fish
Scale rings indicate age
Barred Owl
Like other owls, the barred owl swallows its prey whole.
Basilisk Lizard
Can run/walk on water.
Bass
Prized by sport fishers for their size and strength
Bat
Detects prey using echolocation!
Bat-Eared Fox
Bat-eared foxes can run up to 35 MPH!
Baya
The baya constructs a massive nest out of plant fibers
Bea-Tzu
The Bea-Tzu has a fast-growing coat
Beabull
An excellent companion for cats!
Bearded Dragon
Can grow to up 24 inches long!
Bed Bugs
Bed bugs feed for 4-12 minutes.
Bee-Eater
They roll around in dirt to prevent external parasites
Beetle
There are more than 350,000 different species
Bighorn Sheep
Bighorn rams can run at speeds up to 40 miles per hour when fighting for dominance.
Bird Of Paradise
There are around 50 different species!
Bismarck Ringed Python
When these snakes are babies, they look like Halloween snakes with their bright orange and black bands.
Black Bass
The most popular game fish in North America
Black-Bellied Whistling Duck
They have bright pink bills.
Black-Capped Chickadee
Black-capped chickadees weigh less than half an ounce!
Black Crappie
Black crappie fish can hybridize with white crappie, resulting in a closely related species.
Black German Shepherd
Thought to be aggressive, they are actually affectionate dogs with a protective streak.
Black-headed python
Black-headed pythons gather heat with their heads while their bodies stay hidden and safe.
Black Mamba
Black mambas are the longest venomous snake in Africa, and second longest in the world.
Black Rat Snake
They're also called black pilot snakes due to a myth that they "pilot" venomous snakes to a den where they can go into brumation for the winter.
Black Sea Bass
Black sea bass males become fluorescent blue and green during the breeding season.
Black-Tailed Rattlesnake
One of the most beautiful rattlesnakes, they have solid black tails.
Black Throat Monitor
The black-throat monitor is the second-longest lizard species in Africa and the largest in mass.
Black Wasp
The great black wasp is a species of digger wasp.
Black Widow Spider
They typically prey on insects!
Blackburnian Warbler
They are the only songbird in North America with an orange throat!
Blackfin Tuna
expensive sushi-grade tuna
Bladefin Basslet
The tiny bladefin basslet belongs to the same subfamily as the giant grouper, Epinephelinae.
Blanket Octopus
Females can weigh up to 40,000 times more than their partners.
Blind Snake
The blind snake is often mistaken for a worm.
Blister Beetle
Blister Beetles are attracted to lights at night.
Blood Python
Blood pythons are so called because of the blood red markings on their skin.
Blue Belly Lizard
This species can detach its tail to escape from predators
Blue Catfish
It's a strong fighter when caught on a fishing line
Blue Eyed Pleco
Can live safely with many types of fish.
Blue Gray Gnatcatcher
Joy and happiness are the spiritual meaning of this bird.
Blue grosbeak
Blue grosbeak parents take off the head, legs and wings of an insect before feeding it to their baby.
Blue Jay
Blue jays rub ants on their feather to remove harmful acids
Blue Nose Pit Bull
Their noses are actually light bluish-gray.
Blue Racer
Some blue racers have smooth scales that are solid electric blue while others are grayish or brownish.
Blue-Ringed Octopus
The blue-ringed octopus produces some of the deadliest poison in the world
Blue Tanager (Blue-Grey Tanager)
They travel and forage in pairs or groups
Blue Tang
One of the most colorful members of the genus Acanthurus
Blue Tit
The blue tit can hang upside down from branches
Bluefish
Bluefish are known for their "bluefish blitzes," where they chase schools of small baitfish to the surface, creating a feeding frenzy visible from the shore.
Bluegill
The world record for longest bluegill is 15 inches.
Boas
Boas are considered primitive snakes and still have vestigial legs, called spurs.
Bobcat
About double the size of a domestic cat!
Bobolink
In spring, the male bobolink is the only North American bird who is dark below and light colored above. This makes identification easy.
Boer Goat
Most popular meat goat in the world
Bolivian Anaconda
This is a newly described species! In 2002, scientists realized they had a different species in Bolivia.
Bonito Fish
May eat squid or other small invertebrate ocean life
Bonnethead Shark
Bonnetheads are the only hammerhead sharks that use their pectoral fins to swim.
Booby
Seabirds found across the South Pacific!
Boomslang
Boomslangs are primarily arboreal but sometimes come to the ground.
Bottlenose Dolphin
Stays in groups from 15 to 2,000 in number!'
Bowfin
The bowfin is a primitive fish that first evolved in the Jurassic
Bowhead Whale
Bowhead Whales can make hundreds of distinct songs they use to communicate with one another.
Brahminy Blindsnake
These snakes have been introduced to all continents, except Antarctica!
Brazilian Treehopper
“Mild-Mannered Minimonsters”
Bredl’s Python
These snakes love to climb trees, and young snakes often hide high in the branches.
Bronze-winged Jacana
Fathers pick up their young and carry them under their wings
Brook Trout
The Brook Trout is actually part of the salmon family, making it not technically a trout.
Brown Headed Cowbird
Males are generally monogamous during mating season and will protect the female from other males. However, females tend to venture from their partners and mate with other males.
Brown Tree Snake
People have reported seeing these snakes in Texas, Oklahoma, and Hawaii, but this has never been proven!
Brown Water Snake
Has more scales than any other water snake on the continent: 27 to 33 rows of dorsal scales!
Budgerigar
Natively found in Australia!
Buffalo
"They look like you owe them money."
Buffalo Fish
The oldest Buffalo fish recorded was 112 years old!
Bull Shark
Unpredictable and aggressive temperament!
Bullfrog
Has loud cow-like calls!
Bullsnake
Considered “The farmer’s friend” because it eats mice and other vermin.
Burrowing Owl
The burrowing owl lives in underground burrows
Bush Baby
In a series of leaps, this creature can cover almost 30 feet of distance in just a few seconds.
Bush Viper
Bush vipers are predators, sinking their fangs into prey while dangling from a tree limb
Butterfly
There are thought to be up 17,500 species!
Cactus Mouse
In hot temperatures, they lower their metabolism and become inactive to reduce the amount of water they need to survive
Cactus Wren
It is the largest wren in the United States
Caecilian
Some species' babies use their hooked or scraper-like teeth to peel off and eat their mother's skin
Caiman
Can grow to up 6 meters long!
Caiman Lizard
Caiman lizards are among the largest lizards.
California Kingsnake
A full-grown California kingsnake can be about 3.5 feet long, though there are some cases in Mexico of the snake being almost twice this size.
California Tarantula
They can go for months without eating!
Camel
Can survive without water for 10 months!
Camel Cricket
The camel crickets that are found in the USA are light brown in color. They also have dark streaks all over their body.
Camel Spider
Fast, carnivorous arachnid with a painful bite.
Canada Lynx
They have natural snowshoes
Canada Warbler
These birds travel more than 3,000 miles during migration!
Cane Rat
Often eaten as bush meat or as livestock
Cantil
Cantils heads are marked with bright white lines on each side of their heads.
Canvasback
They're the largest diving duck in North America!
Capuchin
Named after Capuchin friars.
Capybara
Excellent at both diving and swimming
Caracal
Has 20 different muscles in it's ears!
Cardinal
There are 14 genera and 53 species in the cardinal family
Carp
The carp is one of the most popular pond fishes in the world
Carpenter Ant
Carpenter ants can lift up to seven times their own weight with their teeth!
Carpet Viper
The Carpet Viper probably bites and kills more people than any other species of snake.
Cascabel
Cascabels rely on their camouflage first, and rattle if that doesn't work.
Cashmere Goat
Cashmere goat are named after Kashmir regions of India and Pakistan
Cassowary
Can reach speeds of 30 mph!
Cat-Eyed Snake
Evidence indicates that females can delay fertilization and store sperm for later years to produce eggs even in the absence of contact with a male!
Cat Snake
Some cat snakes have a prehensile tail that helps them climb into trees.
Catahoula Bulldog
Catahoula bulldogs are a medium to large-sized breed and weighs between 75 to 100 pounds!
Caterpillar
The larvae of a moth or butterfly!
Caucasian Shepherd
These former bear-hunting dogs are used today as prison guard dogs in Russia.
Cedar Waxwing
Their feathers have red, waxy tips that can be hard to identify unless you’re up close.
Centipede
There are about 3,000 documented species!
Central Ranges Taipan
The central ranges taipan may be among the deadliest snakes in the world.
Chamois
Natively found in the European mountains!
Checkered Garter Snake
It has the ability to expel a stinky liquid from its body as a way to make predators (and humans) retreat!
Chestnut-Sided Warbler
They inhabit regrowing forests
Chicken
First domesticated more than 10,000 years ago!
Chigger
Surviving on the skin cells of humans and animals
Children’s python
These snakes come in a wide variety of patterns and colors.
Chimaera
Also called ghost shark
Chinese Geese
They are excellent “guard geese”
Chinese Water Deer
They usually have 2-3 young at a time but can have up to 7!
Chinook Salmon
The Chinook salmon undertakes a long migration for the spawning season
Chinstrap Penguin
There are 7 million breeding pairs!
Chipmunk
There are 25 different species!
Chipping Sparrow
Gets its nickname "hair bird" due to the fact that it lines its nest with animal hair
Chiton
Chitons are closely related to snails, oysters, and mussels because of their shared phylum
Christmas Beetle
Christmas beetles got their common name because they’re most abundant around Christmas time.
Christmas Island Red Crab
During the breeding season, roads can dangerous for cars as well as the crab. Their shells are so hard they can puncture tires.
Cichlid
There are more than 2 000 known species!
Cinnamon Bear
A newborn cinnamon bear weighs 1/2 pound -- about the same as a large apple.
Cinnamon Ferret
A ferret’s heartrate is 200 to 250 beats a minute.
Clark’s Grebe
Clark's grebes use their bills to spear prey
Clearnose Skate
The skate with translucent nose patches
Clownfish
Also known as the anemonefish!
Coastal Carpet Python
This subspecies can reach 13 feet, but usually tops out at 9 or 10.
Coastal Taipan
The venom in its bite starts to have adverse effects on a human within 30 minutes
Coati
Found in dense forests and wet jungles!
Cobia Fish
It has teeth not only in its jaws but in its tongue and the roof of its mouth
Cobras
Several medicines have been created using cobra venom.
Cockle
Cockles live quite long; their lifespan usually ranges from 5 to 10 years in the wild.
Cockroach
Dated to be around 300 million years old!
Codling Moth
Pupae are able to undergo diapause to survive poor fruit yield years and winter.
Collared Peccary
Form bands of up to 12 individuals!
Colossal Squid
Can survive eating a single fish for months
Comb-crested Jacana
They are busy foragers, always on the move
Comet Moth
Adult comet moths do not feed at all till they die less than 12 days later.
Common Buzzard
The most common raptor in the UK!
Common European Adder
European adders are the only snake that lives above the Arctic Circle.
Common Frog
Found throughout the European continent!
Common Goldeneye
They're known as whistlers because of the sound of the wind in their feathers.
Common Green Magpie
Magpies are aggressive when threatened, often “dive-bombing” at intruders
Common House Spider
House spiders have the ability to eat most insects in a home.
Common Loon
Also known as the Great Northern Diver
Common Raven
A group of ravens is called an unkindness or a conspiracy.
Common Toad
Most active in wet weather!
Common Yellowthroat
The Common Yellowthroat stays close to the ground and uses stealth to survive!
Conger Eel
The European Conger ( Conger conger) can weigh as much as an adult human!
Cookiecutter Shark
The cookiecutter shark takes its name because it leaves a cookie-shaped bite hole in its prey.
Cooper’s Hawk
Eyes change color as they age
Coral Snake
There are over 80 species of coral snake worldwide.
Corella
Corella birds are noisy, especially during the early morning or late evening.
Cormorant
They can fly 35 mph and dive 150 feet below water.
Corn Snake
Corn snakes are partly arboreal and are excellent climbers.
Cosmic Caterpillar
Cosmic caterpillars have spots on their back that look like eyes to scare off predators.
Costa’s Hummingbird
Costa's Hummingbird males have iridescent purple feathers on their heads and necks.
Cottonmouth
The cottonmouth (also known as a water moccasin) is a highly venomous pit viper that spends most of its life near water.
Coues Deer
Coues deer are smaller than other white-tail deer, following Bergmann's Rule that average size is greater for animals farther from the equator.
Cougar
The Second Largest feline in North America
Coyote
Also known as the Prairie Wolf!
Crab-Eating Fox
The crab-eating fox is extremely adaptable, living in all sorts of habitats and eating almost any available food.
Crab-Eating Macaque
Found throughout the South-East Asian jungles!
Crab Spider
Crab Spiders can mimic ants or bird droppings
Crabeater Seal
The crabeater seal doesn’t actually eat crab at all, but instead krill
Crappie Fish
The crappie is one of the most popular freshwater fish in North America.
Crocodile
Have changed little in 200 million years!
Crocodile Monitor
Its tail is twice the length of its body.
Crocodile Shark
Responsible for damaging fiber optic cables laid by AT&T in 1985
Crocodylomorph
Crocodylomorphs include extinct ancient species as well as 26 living species today.
Cross Fox
The cross fox’s tail is bushier than the tail of the average red fox
Crucian Carp
Can survive drought by burying itself in mud.
Cuban Boa
One of the only snakes observed using cooperative hunting tactics.
Cuban Cockroach
Believed to have been introduced to the United States by being shipped with green bananas.
Damselfish
Damselfish belong to the family Pomacentridae
Danios
These fish make a popular choice for aquarium hobbyists due to their hardy nature.
Dark-Eyed Junco
They are called snowbirds because many subspecies reappear in the winter.
Darkling Beetle
Darkling Beetles have segmented antennae. Each one is divided into eleven segments.
De Brazza’s Monkey
They forage on plants and fruits and act as seed dispersers, helping their environment.
Deathwatch Beetle
The adult deathwatch beetle taps on the wood to find a mate.
Deer Mouse
Roughly 60 different species of deer mice range from Canada to Central America!
Desert Kingsnake
The desert kingsnake rolls over and plays dead when it feels threatened.
Desert Locust
Solitary locusts are grey while gregarious locusts are yellow with stripes.
Diamond Python
These pythons live at higher altitudes and further south than any other python species.
Diamondback Moth
Adult males make high amplitude boing noise to attract females
Dickcissel
They have a unique call that they are named for.
Dik-Dik
Dik-diks use a tar-like liquid from their eye glands to mark their territory!
Diminutive Woodrat
The presence of a Nelsonia tail in a tree indicates that these woodrats may be arboreal at times.
Dinosaur Shrimp
These "shrimp" evolved to survive very harsh climates, which is one reason they have been able to live so long.
Diving Duck
Diving ducks can forage for food at depths of over 40 feet and stay underwater for up to one minute.
Doxle
Doxles have long floppy ears
Draco Volans Lizard
Beneath the lizard’s “wings” are a pair of enlarged ribs for support.
Dragon Eel
Dragon eels have double jaws and two sets of razor-sharp teeth
Dragon Snake (Javan Tubercle Snake, Javan Mudsnake)
Sport three rows of raised dorsal scales
Dried Fruit Moth
In the event of adverse environmental conditions, dried fruit moth larvae will become dormant and stop developing.
Duck
Rows of tiny plates line their teeth!
Dumeril’s Boa
Some tribes believe that the snake's skin holds the souls of their ancestors.
Dung Beetle
The dung beetle can push objects many times its own weight
Dunnock
Both male and female dunnocks can have multiple mates every breeding season
Dwarf Boa
Some species can change color from dark to light, and back again.
Dwarf Gourami
Dwarf gourami can live for over four years with proper care.
Dwarf Hamster
dwarf hamsters love to explore at night.
Eared Grebe
The most populous grebe in the world
Earwig
There are nearly 2,000 different species!
Eastern Bluebird
Bluebirds drop straight down on their prey from their perch, much like leopards.
Eastern Chipmunk
The name chipmunk is derived from an Ojibwe word that means “one who descends the trees headfirst.”
Eastern Coral Snake
One of the most dangerous snakes in the USA.
Eastern Cottontail
Can run up to 18 miles per hour
Eastern Fence Lizard
Females are usually larger than males.
Eastern Glass Lizard
When the glass lizard loses its tail it can grow another one. But the new tail lacks the markings of the old one and is usually shorter.
Eastern Gray Squirrel
Eastern gray squirrels use both memory and scent to find their buried caches of food during the winter.
Eastern Hognose Snake
Eastern hognose snakes are venomous, but only to frogs and toads.
Eastern Indigo Snake
Eastern Indigo snakes regularly chase down and eat rattlesnakes and may be immune to their venom.
Eastern Kingbird
The eastern kingbird is a fierce fighter once known as the butcher king!
Eastern Phoebe
This passerine bird can sing its song without ever hearing another bird vocalize first.
Eastern Racer
Fast and Furious!
Eastern Rat Snake
Rat snakes are medium-to-large, nonvenomous snakes that kill by constriction.
Eastern Tiger Snake
More than 10 percent of eastern tiger snakes are blind in at least one eye.
Eastern Turkey (Wild Turkey)
You can hear their gobbles up to a mile away!
Echidna
Also known as the Spiny Anteater!
Eclectus Parrot
Does not squawk like other parrot species.
Edible Frog
Are known to guard the muddy banks!
Eel catfish
Eel catfish breathe air and reach up on land to catch beetles. Scientists think they may be a missing link between fish and lizards.
Eelpout
Not actually "eels"
Egret
Most species are relatively vocal, making harsh croaking sounds and squeals.
Egyptian Cobra (Egyptian Asp)
The Egyptian cobra is one of the largest cobras in Africa.
Egyptian Goose
A duck species that resembles a goose when flying
Eland
Both females and males have horns.
Electric Catfish
The electric catfish can discharge an electric shock up to 450 volts
Electric Eel
Despite its powerful shock, electric eels have terrible vision.
Elephant Beetle
The males have multiple horns at the front of their bodies.
Elephant Fish
Elephant fish are known as the Australian ghost shark, but they are not actually a shark species!
Elephant Seal
The largest species of seal in the world!
Elephant Shrew
Found exclusively on the African continent!
Elf Owl
The elf owl is the smallest and lightest owl in the world
Elk
Adult males can jump eight feet vertically
Emerald Toucanet
Emerald Toucanets spend their lives high in the canopy of tall forests, almost never coming to the ground!
Emerald Tree Boa
Their teeth are as long as a fully-grown reticulated python
Emerald Tree Monitor
They lay their eggs in termite nests!
Emperor Angelfish
One of the most beautiful fish on the planet!
Emperor Tamarin
Has an elegant white moustache!
Emu
The largest bird in Australia!
English Angora Rabbit
Pet angora rabbits are sometimes mistaken for fluffy dogs.
English Crested Guinea Pig
Contrary to their name, English crested guinea pigs did not originate in the UK
English Longhorn Cattle
Although they look similar to the Texas Longhorn, they are not closely related.
Equatorial Spitting Cobra
Its hood is actually made of many elongated ribs.
Ermine
A very bold and ferocious predator!
Escolar
Its system can’t metabolize wax esters, which can lead to unpleasantness for diners.
Eurasian Beaver
Eats 20% of its weight daily!
Eurasian Bullfinch
The shy eurasian bullfinch prefers to forage very close to cover.
Eurasian Collared Dove
The Eurasian collared dove has been extensively studied due to its amazing ability to rapidly colonize new territories.
Eurasian Eagle-owl
The Eurasian Eagle-owl is the second largest owl in the world with a wingspan up to six feet!
Eurasian Jay
The Eurasian jay has the ability to mimic other sounds
Eurasian Lynx
Eurasian lynxes can survive extreme weather up to elevations of 18,000 feet
Eurasian Nuthatch
Its song has been compared to a toy horn.
Eurasian Sparrowhawk
Females are typically 25% larger than males.
European Bee-Eater
They can eat up to 250 bees per day!
European Goldfinch
They are frequent visitors to backyard feeders, especially those containing niger seeds.
European Polecat
Its fur changes color in the winter!
European Robin
Male robins are so aggressive and territorial that they will attack their own reflections.
European Starling
European starlings are accomplished mimics, often copying songs or sounds of other birds and animals (frog calls, goats, cats), or even mechanical sounds and human speech!
European Wildcat
A group of wild cats is called a destruction
Evening Bat
The evening bat is one of the few bats that regularly has twins
Executioner Wasp
The Executioner Wasp's sting is one of the most painful in the world.
Eyelash Viper
While the eyelash viper can be a pet, be cautious – they are extremely venomous!
Fairy-Wren
They forage in groups
Fallow deer
The fallow deer has more variation in its coat colors than most other deer.
False Cobra
When it feels threatened, it mimics a cobra in an attempt to dissuade a potential attacker.
False coral snake
The false coral snake mimics both the coral snake and the cobra to scare away predators
False Water Cobra
There are several color morphs, including lavender!
False Widow Spider
False spiders actually prey on black widow spiders and other hazardous spiders
Fancy Mouse
Fancy mice are beloved pets with a history of domestication spanning thousands of years!
Fangtooth
Has the largest teeth compared to body size of any known fish!
Fennec Fox
Found in the African Sahara Desert!
Ferruginous Hawk
The ferruginous hawk comes in both light and dark morphs
Fiddler Crab
The fiddler crab gets its name from the motion the males make with their over-sized claw during the mating ritual.
Fierce Snake
It can kill multiple humans with the amount of venom it releases in one bite.
Finch
Finches have strong, conical bills that help them break open tough seeds that many other birds cannot.
Fire-Bellied Toad
Found across mainland Europe and Asia!
Fire Eel
Fire Eels are not true eels.
Fire Salamander
Its name comes from the fact that people once believed it was born in fire
Firefly
The firefly produces some of the most efficient light in the world
Fish
Respire through the gills on their heads!
Fisher
The fisher is an agile climber and makes its home in tree hollows.
Fishing Spiders
Fishing spiders have hydrophobic hair on their skin that allows them to survive on water
Flamingo
Sleeps on just one leg!
Flathead Catfish
The only predators that prey on flathead catfish are members of their own species and humans who catch them for commercial and recreational purposes.
Flea
Adult fleas can jump up to 7 inches in the air
Flea Beetle
Flea beetles can jump like fleas when threatened.
Florida Gar
The Florida gar has toxic eggs to protect against predators
Flounder
A flat fish found in the Atlantic and Pacific!
Flounder Fish
There are around 240 different species of Flounder fish
Fluke Fish (summer flounder)
The chameleon of the seas!
Fly
There are more than 240,000 different species!
Flying Fish
Can glide in the air for hundreds of feet
Flying Lemur
The second pair of upper incisors in a flying lemur has a double root, which is unique for mammals.
Flying Snake
Flying snakes are the only gliding limbless vertebrates or animals with a backbone!
Flying Squirrel
Can glide up to 90 meters!
Football Fish
The football fish is named after its unusual round or oblong shape
Forest Cobra
There are three different color morphs, which entirely depend on the region that they live in.
Fox Snakes
In some areas, fox snakes and gopher snakes have crossbred in the wild.
Fox Squirrel
Although it is a tree squirrel, it spends most of its time on the ground.
Freshwater Crocodile
The freshwater crocodile is the fastest crocodile on land.
Frigatebird
Found inhabiting tropical islands and coasts!
Frilled Lizard
Mainly lives in the trees!
Frilled Shark
Frilled Sharks got their name from the six rows of gills on their throat that look like ruffled collars.
Fritillary Butterfly
Some emit noxious defense chemicals
Frogfish
The frogfish can change colors, but it takes several weeks to do so
Fruit Bat
Among the largest bats in the world
Fruit Fly
Fruit flies are among the most common research animals in the world
Fulvous Whistling Duck
They build a ramp from their nest, which leads to a nearby water source
Furrow Bee
N/A
Gadwall
They make many sounds when trying to attract a mate.
Gar
Can grow to more than 3m long!
Garden Eel
Garden eel colonies are made up of hundreds to thousands of individuals.
Gargoyle Gecko
Gargoyle Geckos are about an inch long and weigh as little as 3 grams when they hatch!
Genet
The Genet has retractable claws like a cat
Geoffroys Tamarin
Has distinctive V shape on head!
Gerbil
Originally known as the Desert Rat!
Ghost Catfish
You can see its heart beating
Ghost Crab
Their eyestalks, which are sometimes horned, can swivel 360 degrees
Giant African Land Snail
The biggest snail species on land!
Giant Salamander
Cryptobranchus giant salamanders breathe mostly through their skin.
Giant Trevally
The largest fish in its genus
Glass Frog
You can see their internal organs.
Glass Lizard
Can grow up to 4ft long!
Goat
Most closely related to the Sheep!
Goblin Shark
Goblin Sharks are called a living fossil because their family, Mitsukurinidae, can be traced back 125 million years.
Goldcrest
The goldcrest never starts moving and needs to consume for most of the day to survive. Therefore, in the colder months, it's best that eat 90% a day.
Golden-Crowned Kinglet
They huddle together for warmth
Golden Eagle
Their calls sound like high-pitched screams, but they are quiet most of the time.
Golden Jackal
roaming and adaptable candids
Golden Oriole
Migrates between Europe and Asia!
Golden Shiner
One of the most popular bait fish in the US.
Goldfish
Goldfish and common carp can mate and produce offspring
Goliath Tigerfish
Featured in "River Monsters" TV series!
Goose
There are 29 different species!
Goshawk
The goshawk is a popular choice among European falconers
Gourami
Gourami fishes show parental care for their young
Grass Carp
The grass carp is considered to be a natural weed control agent.
Grasshopper
There are 11,000 known species!
Grasshopper Mouse
The grasshopper mice attack predators using the poison of their venom.
Gray Catbird
Their songs have cat-like qualities and can mimic other birds and animals, like tree frogs.
Gray Fox
The gray fox has retractable claws and a rotating wrist that allow it to climb trees with some proficiency
Gray Tree Frog
This frog can "freeze" itself by making glycerol that becomes glucose, which acts like antifreeze and stops its heartbeat and breathing!
Great Blue Heron
Their wingspan is larger than an eagle’s; both males and females help hatch the eggs; rich in symbolism
Great Crested Flycatcher
This species makes use of some truly unusual nesting material, including snakeskin and garbage
Great Plains Rat Snake
This snake vigorously shakes its tail as a way to frighten away predators.
Great Potoo Bird
At night, they make a terrifying low call that sounds like a distressed moan or growl.
Green Anaconda
Females are often five times longer than males.
Green Anole
It communicates with head movements, color and dewlap
Green Bee-Eater
Mainly eats honeybees!
Green Frog
Green frogs will eat any animal that they can fit in their mouth.
Green Mamba
Green mambas are fast, and can travel up to 7 miles per hour.
Green Rat Snake
The green rat snake catches its meals in midair!
Green Snake
There are two types of green snakes: smooth green snakes and rough green snakes
Green Tree Frog
Green tree frogs breathe through their skin
Green Tree Python
Green tree pythons are non-venomous, so to subdue their prey, they have a couple of very unique and highly successful hunting techniques.
Grey Heron
Male grey herons are picky about their mates. They'll reject a female that they don't fancy.
Grey Mouse Lemur
The largest species of mouse lemur!
Griffon Vulture
Can spot a dead animal from thousands of feet away
Ground Snake
It’s sometimes called a miter snake due to the marking on its head that looks like a bishop’s miter
Ground Squirrel
Ground squirrels are adept excavators and can dig colonial burrows larger than football fields!
Groundhog (Woodchuck)
They whistle to each other to warn of approaching danger!
Grouper
Many grouper can change their sex, and it is always from female to male.
Grouse
Feathered legs and toes!
Guinea Fowl
Found in a vairety of African habitats!
Guinea Pig
Natively found in the Andes Mountain range!
Gulper Eel
Gulper eels have a similar lifespan to humans and can live up to 85 years old. However, their age depends on their habitat and the availability of food.
Guppy
Also known as the Millionfish!
Gypsy Moth
One of the most invasive species in the world
Habu Snake
Unlike most pit vipers, the habu snake lays eggs instead of giving birth to live young.
Hairy Frogfish
Hairy frogfish can eat prey as large as themselves by swallowing them whole.
Hairy Woodpecker
They are natural pest controls
Hammond’s flycatcher
“Hammond’s flycatcher has a call known as a sharp peek!”
Hamster
Able to run as quickly backwards as forwards!
Harbor Porpoise
Surprisingly, not a dolphin!
Harbor Seal
Harbor seals can dive as deep as 1400 feet
Hardhead Catfish
The hardhead catfish has a sharp spine near its fin to inject venom
Harlequin Coral Snake
Red touches yellow kills a fellow, red touches black a friend of Jack.
Harp Seal
The harp seal can migrate up to 3,000 miles every year
Harris’s Hawk
Their vision is eight times better than a human's
Hartebeest
Unlike other animals that move towards the water source, hartebeests move to more arid locations after rainfall.
Hawk Moth Caterpillar
Many hawk moth caterpillars eat toxins from plants, but don’t sequester them the way milkweed butterflies do. Most toxins are excreted.
Hedgehog
Thought to be one of the oldest mammals on Earth!
Hepatic Tanager (Red Tanager)
Parents and their young sing sweetly to each other
Heron
Inhabits wetlands around the world!
Herring Gull
They are loud, spirited birds with raucous cries that sound like bursts of laughter.
Highland Cattle
Natively found in the Scottish Highlands!
Hoary Bat
The hoary bat travels hundreds of miles south for the winter
Hognose snake
Prima Donnas of the Snake World
Holy Cross Frog
The holy cross frog has a cross-shaped colored pattern on its back.
Honey Badger
One of earth's bravest creatures!
Honey Buzzard
Honey buzzards are medium-sized raptors that earned their names by raiding the nests of bees and wasps.
Hooded Oriole
Hooded orioles have a strong sweet tooth that makes nectar and jelly among its favorite foods.
Hook-Nosed Sea Snake
Sea snakes are the most numerous venomous reptiles on Earth.
Hoopoe
Stunning bird with a stinky way to deter predators!
Hornbill
The bird has a massive horn on its bill!
Argentine Horned Frog
Natively found in South America!
Horned Viper
Horned vipers sidewind across the desert sands of their home.
Hornet
Hornets are a type of wasp.
Horse Mackerel
Got their name from a myth that other fish would ride them over great distances
Horsefly
Horseflies have been seen performing Immelmann turns, much like fighter jets.
Horseshoe Crab
Changed little in over 500 million years!
House Finch
The house finch can become redder depending on what it eats
House Sparrow (English Sparrow)
The house sparrow has been introduced all over the world
House wren
The wren’s epithet, aedon, comes from a Greek queen who accidentally killed her only son. She was actually aiming for her nephew, and Zeus took pity on her and turned her into a nightingale.
Howler Monkey
Spends 80% of it's time resting!
Human
Thought to have orignated 200,000 years ago!
Humpback Whale
The humpback whale makes complex, beautiful songs with its throat.
Huntsman Spider
Some huntsman spiders have an interesting way of moving around. Some cartwheel while others do handsprings or backflips.
Ibis
Found in swamps, marshes and wetlands!
IMG Boa Constrictor
The first IMG boa was born in a litter of anerythristic boas.
Impala
Able to jump over 10 feet high
Imperial Moth
Since the imperial moth doesn’t eat, it does die shortly after it lays its eggs. Its lifespan is only about one week.
Indian Cobra
One of the Big Four.
Indian Giant Squirrel
Indian giant squirrels use their large tail to help them balance.
Indian Palm Squirrel
Natively found in parts of India and Sri Lanka!
Indianmeal Moth
Indianmeal moths are not from India
Inland Taipan
A single inland taipan bite has enough venom to kill a hundred men.
Insects
There are an estimated 30 million species!
Irukandji Jellyfish
Tiny ocean killer
Jabiru
They form lifelong pair bonds and live in groups near water sources.
Jacana
The jacana has the ability to swim underwater
Jack Crevalle
One of the biggest species in the Caranx genus
Jackal
Can maintain speeds of 16 km/h!
Jackdaw
The jackdaw tends to mate for life with a single partner
Jackrabbit
They can run as fast as 45 mph.
Jaguarundi Cat
These cats are expert swimmers.
Japanese Bantam Chicken
Japanese bantam chickens are the best flying chicken species
Japanese Beetle
Can clear an entire fruit tree in 15 minutes in a swarm
Japanese rat snake
The albino Japanese rat snake is a symbol of good luck.
Japanese Squirrel
The Japanese squirrel hoards its food for the winter
Jellyfish
Have tentacles around their mouths!
Jerboa
Tiny rodent with a kangaroo-like jump!
Joro Spider
Shares its name with a Japanese "spider demon"!
Jungle Carpet Python
Their stunning coloration is sometimes muddy yellow or even tan and black in the wild.
Junglefowl
The term "pecking order" comes from junglefowls' hierarchies among both sexes
Kangaroo
Females have a deep pouch on their front!
Kangaroo Mouse
The Kangaroo Mouse is a tiny mouse that stands and hops around on its hind legs, much like a kangaroo.
Keel-Billed Toucan
It's beak can reach nearly 20 cm long!
Keelback
The checkered keelback of the east Indies can detach its tail and grow it back, much like a lizard.
Kelp Greenling
Male Kelp Greenlings participate in an unusual mating ritual by fertilizing eggs in the nests of other males.
Kentucky Warbler
The Kentucky Warbler appears to wear bright yellow cat-eye glasses!
Kenyan Sand Boa
A popular pet snake that comes in dozens of morphs!
Kestrel
Can hang suspended on wind currents
Kiang
The kiang, native to the Tibetan Plateau, is the largest of the wild asses!
Killdeer
The killdeer feigns injury to draw a predator away from its nest.
King Eider
The species name, spectabilis, is Latin for “showy” or “remarkable,” referencing the attractiveness of the adult male’s plumage.
King Penguin
More than 2 million breeding pairs!
King Quail
Females look similar to males but don’t come in shades of blue
King Rat Snake
When threatened or frightened, the king rat snake has the ability to produce a foul-smelling substance out of self defense.
King Salmon
Largest of the Pacific salmon
King Vulture
The king vulture is the second largest New World vulture species
Kinkajou
The kinkajou is a nimble forest-dwelling mammal of Central and South America.
Kissing Gourami
The kissing gesture that the kissing gourami displays is not a mating gesture
Kit Fox
The kit fox is the smallest canid in North America.
Klipspringer
Klipspringers can jump as high as 10-12ft!
Knight Anole
When threatened, the promiscuous knight anole rises on all fours and turns bright green, and gives a menacing look.
Koala
Spends up to 80% of the time sleeping or resting!
Kodiak Bear
Kodiak bears are the second largest bear in the world after the polar bear.
Kudu
Lives in herds of up to 24 individuals!
Labout’s Fairy Wrasse
Females are sequential hermaphrodites, which means they can convert to males anytime during their life cycle.
Labrottie
Labrotties will goof around clownishly to get laughs and attention.
Lace Bug
May bite when threatened
Lace Monitor
When communicating, they make a loud, terrifying hissing sound, and they will strike any potential danger with their mighty tails.
Ladyfish
Ladyfish are aggressive fighter when hooked, making them a favorite of anglers.
Lamprey
Not related to the eel
Landseer Newfoundland
While Landseer's are very gentle and calm, they can sense a dangerous situation and will protect their loved ones.
Largemouth Bass
Georgia, Mississippi, Alabama, and Florida all claim the largemouth bass as the state fish or state freshwater fish.
Laughing Kookaburra
The laughing kookaburra is one of four kookaburra species.
Lawnmower Blenny
Must be in temperatures of 78 degrees Fahrenheit to breed
Lazarus Lizard
Lazarus Lizards can communicate through chemical and visual signals.
Least Flycatcher
They can travel up to 72 miles in a single day.
Leech
Has 10 pairs of eyes!
Lemur
Natively found on the island of Madagascar!
Leopard Cat
There are 11 different species!
Leopard Frog
They can jump up to three feet
Leopard Gecko
The first ever domesticated lizard! There are now more than 100 unique color morphs thanks to selective breeding.
Leopard Shark
Leopard Sharks have teeth with three points.
Leopard Tortoise
The most widely distributed tortoise in Africa!
Lesser Jacana
The lesser jacana is nomadic, often moving in search of temporary wetland habitats.
Lesser Scaup
Young lesser scaups learn to dive as soon as their down dries.
Linnet
While linnets are monogamous during mating season, they do not mate for life. While breeding pairs are together, the males are highly territorial and will defend the nesting site and the surrounding area.
Lionfish
Females can release up to 15,000 eggs at a time!
Little Penguin
The smallest species of penguin!
Lizardfish
The lizardfish can camouflage itself against the sandy bottom to avoid predators.
Llama
Natively found in the Andes Mountain range!
Loach
Have sharp spines below their eyes
Lobster
Have been known to reach 100 years old!
Locust
Each locust can eat its weight in plants each day.
Long-Eared Owl
Ear tufts make it look bigger!
Long-Tailed Tit
Often hangs upside down while feeding!
Long-Winged Kite Spider
The long-winged kite spider sets itself apart from other spiny orb-weavers by its elongated spiked protrusions from its sides, giving it the appearance of a pointed kite (its namesake).
Longnose Gar
The longnose gar species of the gar family has potentially existed for 100 million years.
Lorikeet
The lorikeet has a long brush-like tongue with fine hairs on it
Lungfish
The lungfish first evolved almost 400 million years ago.
Lynx
Live in dens in rocks and under ledges!
MacGillivray’s Warbler
The complicated story of how MacGillivray’s Warblers got their name involves three ornithologists, a physician and a compromise.
Madagascar Hissing Cockroach
One of the largest types of cockroach
Maggot
Will only live in wet areas
Magnolia Warbler
They line their nests with fungi strands
Mahi Mahi (Dolphin Fish)
It's called the rabbit of the ocean because it multiplies so quickly.
Malayan Krait
It's called the five-step snake because if a person is bitten, they can walk about five steps before dying.
Mallard
With an appropriate tail wind, the mallard can travel hundreds of miles a day
Mamba
The black mamba is land-dwelling while the other three mamba species are tree-dwelling.
Mamushi Snake
The Mamushi snake, which is also known as the Japanese moccasin or the Japanese pit viper, can grow to be over two feet long.
Mandarin Rat Snake
"This docile snake is a popular and long-lived pet - though challenging to care for - with a lifespan of up to 21 years!"
Mangrove Snapper
Tagging studies have found that once adults establish a habitat they typically remain there for long periods. In fact, they found that these fish can stay in one area for up to 4 years.
Marble Fox
The marble fox is not a naturally occurring variant; it was created through artificial selection.
Marine Toad
Produces a toxin used in arrow darts!
Marmot
A marmot spends 80% of its life below ground
Marsh Frog
Has bright green skin!
Masked Angelfish
All masked angelfish are female until sometime after sexual maturity, at which point some become male.
Masked Palm Civet
Found throughout Asia, India and China!
Massasauga
The name “Massasauga” comes from the Chippewa language, meaning “Great River Mouth”.
Mealybug
They have a symbiotic relationship with ants.
Meerkat
One will stand on guard to watch for predators!
Megamouth Shark
Swims with its mouth open to capture prey
Merganser
They line their nests with their feathers
Mexican Eagle (Northern crested caracara)
The northern crested caracara mates for life with its partner
Mexican Free-Tailed Bat
Some colonies have millions of bats
Mexican Mole Lizard
They can break off part of their tail, but it will not grow back.
Milkfish
Females lay up to 5 million eggs at one time in warm, shallow and salty waters
Millipede
Some species have a poisonous bite!
Mojarra
The mojarra's protruding mouth allows it to sift along the seabed for food
Mojave Rattlesnake
"The Mojave rattlesnake is the most venomous rattlesnake in the world."
Mole Cricket
Adult Mole crickets may fly as far as 5 miles during mating season and are active most of the year.
Mole Snake
“The mole snake can reach a length of 6.8 feet”
Monkey
There are around 260 known species!
Monkfish
Called the poor man's lobster!
Monocled Cobra
The monocled cobra is responsible for the highest fatality rate of any snake in all of Thailand.
Moonglow Boa
Moonglow boas are the result of mixing three genetic traits.
Moorhen
Feeds on aquatic insects and water-spiders!
Moose
Renews it's enormous antlers every year!
Moray Eel
Sometimes, groupers invite moray eels to help them hunt!
Mountain Beaver
The beaver that is not a beaver
Mountain Bluebird
Depending on the time of the year, the mountain bird can live as far north as Alaska.
Mountain Lion
Has no real natural predators!
Mourning Dove
It is almost always the male who makes the famous sad sound, which is a wooing call
Mourning Warbler
The Mourning Warbler was named for its gray head, which resembles a mourning veil!
Mouse
Found on every continent on Earth!
Mozambique Spitting Cobra
Mozambique Spitting Cobra is one of Africa's most dangerous snakes.
Mud Snake
Mud snakes can lay over 100 eggs at a single time!
Mudpuppy
Mudpuppies never leave their larval stage. This is called neoteny.
Mudskipper
They walk on land
Mule
The offspring of a horse and donkey parents!
Mule Deer
Mule deer can run up to 45 miles per hour.
Mullet Fish
The Striped Mullet is one of the best-known and most easily identified species, with black horizontal stripes along its body.
Muntjac
The muntjac is the smallest type of deer in the world
Muscovy Duck
Unlike most duck species, the Muscovy is silent and only makes noise when excited or threatened.
Muskox
Muskox have several physical characteristics that allow them to survive in the Arctic climate.
Muskrat
The muskrat can stay underwater up to 17 minutes at a time
Mussurana Snake
Mussurana snakes help keep rodents from overrunning farms.
Myna Bird
Many people believe the hill myna bird is better at mimicking humans than a parrot!
Naked Mole Rat
Naked mole rats don’t get cancer
Needlefish
no stomach to digest food
Nematode
Nematodes range in size from 1/10 of an inch to 28 feet long
Neon Tetra
Neon Tetras are very social and peaceful fish.
Neptune Grouper
The largest recorded specimen ever caught was 17" long
Newt
Able to regrow lost or damaged limbs!
Night Adder
Night adders are small, slender snakes that, despite the name, are actually most active during the day.
Night Heron
When they feel threatened juvenile night herons vomit their stomach contents.
Nightingale
Named more than 1,000 years ago!
Nile Crocodile
Unlike other reptiles, the male Nile crocodile will stay with a female to guard their nest of eggs.
Nile Monitor
The Nile monitor is the world's fourth-largest lizard!
Nilgai
Nilgai were hunted for their meat as far back as 8,000 years ago.
No See Ums
There are more than 5,000 species.
North American Black Bear
Short claws make them good tree climbers!
Northern Alligator Lizard
Unlike other lizards, these give livebirth to their young
Northern Cardinal
Males are a bright red color, also called "cardinal red"
Northern Flicker
Northern Flickers often make their homes in dead trees.
Northern Harrier
They can reach speeds of 25 Mph but prefer to soar low and slow.
Northern Jacana
The northern jacana is one of two species found in the Americas, from the United States to Panama.
Northern Parula
They live in coffee and citrus plantations during the winter
Northern Pintail
Northern pintails migrate at night with speeds reaching 48 miles per hour!
Northern Potoo
You can find them near golf courses in urban areas
Northern Water Snake
Northern watersnakes’ teeth help them nab fish as they swim by.
Nose-Horned Viper
The fangs of a nose-horned viper can be as long as half an inch!
Nudibranch
They get toxins from their prey to use it against predators.
Nuthatch
Nuthatches spend a lot of their time upside down.
Nutria
An invasive species, one female nutria can birth up to 200 babies in just a few years of living!
Nyala
They have a high-pitched alarm call that sounds like a barking dog.
Oak Toad
The toad doesn't hop.
Oarfish
The Giant oarfish (Regalecus glesne) holds the Guinness Book of World Records for the longest bony fish in the world.
Ocean Whitefish
Common around Southern California
Ocelot
Also known as the Painted Leopard!
Octopus
There are around 300 different species!
Oilfish
They live in deep water as far as 2,600 feet below the water’s surface.
Old House Borer
Depending on the habitat and climate, these beetles can live between 2 to 10 years, often staying in their larval stage for several years, making them extremely dangerous to wooden structures.
Oleander Hawk Moth
Oleander hawk moth caterpillars feed on the foliage of oleander, an extremely toxic plant to which they are immune.
Olive Baboon
Olive baboons will sometimes form strong friendships with each other
Olive python
The olive python is a gentle giant that is rarely aggressive.
Olive Sea Snake
Olive sea snakes can stay underwater for two hours without taking a breath.
Olympic Marmot
The Olympic marmot is found in only one location in the United States — the Olympic Mountains in Washington
Opah
Opah are brightly colored, with red-orange fins and a silvery body.
Opossum
Thought to be immune to certain snake venom!
Oranda Goldfish
Oranda goldfish are one of the most popular fancy goldfish breeds
Orange-Crowned Warbler
Often mistaken for the Tennessee Warblers, which are equally dull.
Orange Tanager (Orange-Headed Tanager)
They inhabit the lowlands of the Amazon rainforest
Orchard Oriole
They use rapid wingbeats to hover over foliage as they search for food.
Orchid Dottyback
This fish camouflages as its prey's parents to trick it into becoming dinner.
Oribi
Males oribis spend most of their time patrolling the borders of their territories; they can do this about 16 times an hour! However, 27% of their day is spent grazing.
Oriental Cockroach
Unlike other cockroach species that live indoors living off humans, oriental cockroaches are outdoor scavengers.
Oriental Dwarf Kingfisher
They are one of the smallest kingfishers!
Ornate Bichir
The ornate bichir can survive outside water for short periods of time
Ortolan Bunting
The tradition of hiding your face with a napkin or towel while eating this bird was begun by a priest who was a friend of the great French gastronome Jean Anthelme Brillat-Savarin.
Ostrich
The largest bird in the world!
Owl
The owl can rotate its head some 270 degrees
Oxpecker
The oxpecker, known as the rhino’s guard, alerts its host to danger with a loud commotion
Oyster
Can process up to 10 litres of water an hour!
Oyster Toadfish
The oyster toadfish can produce poison to protect itself
Ozark Bass
Ozark Bass only live in Arkansas and Missouri
Painted Bunting
They are one of the most colorful species of birds.
Painted Turtle
Male painted turtles have longer nails.
Paradise Flying Snake
Paradise Flying Snakes can glide over 100 yards!
Parakeet
Monk parakeets are the only parakeets that actually build nests. They’re also the only parakeets to nest in great colonies.
Parrot Snake
The parrot snake shows off with bright green and bronze colors that cover its entire body.
Parrotlet
Parrotlets aren't the world's tiniest parrot — that would be the pygmy parrot of Australasia.
Partridge
Long-lost civilizations have immortalized male partridges in art, depicting them as a symbol of fertility.
Patas Monkey
The fastest species of primate in the world!
Peacock
Most commonly found on the Indian mainland!
Peacock Butterfly
The eyespots on this butterfly’s wings deter predators from attacking.
Pelican
Can have a wingspan of up to 3 meters!
Peppered Moth
Teachers in schools often use the evolution of the peppered moth as a good example of Darwin’s theory of natural selection.
Peppermint Angelfish
The peppermint angelfish was only first described in 1992.
Perch Fish
Some of the most delicious gamefish in the world
Peregrine Falcon
Fastest animal on Earth
Peringuey’s Adder
Peringuey's adders' eyes are nearly on the tops of their heads!
Pheasant
Females lay between 8 and 12 eggs per clutch!
Pheasant-tailed Jacana
The pheasant-tailed jacana is the only species in its family that migrates long distances.
Pied-Billed Grebe
Chicks stay on the parents' backs until they learn to swim
Pig
Thought to have been domesticated in 9,000 BC!
Pigeon
They can find their way back to their nests from up to 1300 miles away.
Pika
Found in mountainous regions and rocky areas
Pileated Woodpecker
Pairs establish territories and remain all year
Pinacate Beetle
Pinacate beetles do a headstand if they feel threatened
Pine Marten
A pine marten can jump from tree to tree similar to a squirrel.
Pine Siskin
When foraging, pine siskins hang upside down to pick through the leaves and bark, collecting seeds from coniferous trees.
Pine Snake
Pine snakes bluff with the best, trying to scare you away.
Pink-Necked Green Pigeon
They make whistling and quacking noises
Pipe Snake
Some of these snakes flatten their neck and raise their heads to imitate cobras if they’re threatened.
Pipefish
The male pipefish has the ability to carry fertilized eggs with him
Piranha
Generally found in fast-flowing streams!
Pit Viper
Pit vipers's fangs fold up into their mouths when they don't need them.
Plains Hognose Snake
The plains hognose snake gets its name from the upturned end of its snout.
Polecat
They can run at a speed of 15mph
Polyphemus Moth
The Polyphemus moth doesn’t and can't eat, except when it's a caterpillar!
Pompano Fish
They are bottom-feeders
Pond Skater
There are 500 different species!
Pool Frog
The rarest amphibian in the UK!
Porcupine
There are 30 different species worldwide!
Possum
There are 69 species on the Australian continent!
Potoo
The potoo’s eyelids have slits that let them see even when their eyes are closed.
Prairie Dog
Prairie dog “towns” can consists of hundreds of individuals
Pronghorn
While pronghorns are the fastest runner of any Western Hemisphere land animal, they are not good jumpers.
Puff Adder
This large snake is so-named because it will puff up its body to appear bigger than it is when directly threatened by a predator or person.
Pufferfish
The second most poisonous creature in the world!
Puffin
Can remain in the water for up to 2 minutes!
Puma
Has longer back legs than front legs!
Purple Finch
The intensity of the plumage can change based on what the bird eats
Purple Gallinule
They build their nests on the water, anchoring it to nearby aquatic vegetation.
Pygmy python
These snakes have been seen traveling as group of 3-5.
Pygmy Shark
Pygmy sharks underbelly glows to attract prey that swims beneath it.
Pyjama Shark
Pyjama Sharks like to swim in shallow inshore waters.
Python
Female pythons lay eggs and defend them until they hatch.
Quail
Inhabits woodland and forest areas worldwide!
Rabbit
There are more than 300 different species!
Raccoon
Known to wash their food before eating it!
Raccoon Dog
The only hibernating canine!
Racer Snake
The racer snake can speed away at up to 3.5 miles per hour
Rainbow Boa
The rainbow boa is named for its iridescent skin that refracts light and creates a rainbow-colored effect.
Rainbow Kribs (Kribensis)
Rainbow Kribs sometimes nip the fins of other fish, especially ones with long, flowing tails, which is too tempting for them not to bite.
Rainbow Shark
The rainbow shark has been genetically modified to glow in the dark
Rat
Omnivores that eat anything!
Rat Snakes
Rat snakes are constrictors from the Colubridae family of snakes.
Rattlesnake
Rattlesnakes may have evolved their rattle to warn bison away from them.
Red-Bellied Black Snake
These snakes are the only ones in the genus Pseudechis to give birth to live offspring.
Red-Bellied Woodpecker
Red-Bellied Woodpeckers will often steal the nests of other birds.
Red-Billed Quelea Bird
Is the most populous bird in the world
Red Deer
A male red deer shows his age in his antlers, which become longer and more branched every year.
Red Diamondback Rattlesnake
A rattlesnake can shake its rattle back and forth 20-100 times per second.
Red Drum Fish
There were a few sightings of red drums in the Mediterranean Sea off Sicily and Israel, but they do not naturally occur there, so theories are they escaped from fish farms.
Red-Eared Slider
Sliders spend lots of time basking in the sun. As cold-blooded animals, they need the sun to heat up.
Red-Eyed Tree Frog
Despite their spectacular coloration, red-eyed tree frogs aren’t poisonous and can be kept as pets.
Red Finch
Red finches can form flocks of over 100 birds.
Red-handed Tamarin
Red hair on hands on feet!
Red Kite
This bird moves its tail to steer its body like a rudder on a boat.
Red-Lipped Batfish
Despite its weird looks, the red-lipped batfish is harmless to humans
Red Nose Pit Bull
These copper-colored pups were once known as "nanny dogs" for their playfulness with children.
Red Paper Wasp
The Red Paper wasps are lazy flyers; they occasionally land on people, pets, and objects without noticing them.
Red-Shouldered Hawk
Red-Shouldered Hawks reuse the same nesting area each year.
Red Spitting Cobra
Scientists believe that the red spitting cobra evolved from injecting venom to spitting it in response to the constant threat of early humans
Red Squirrel
The red squirrel has one of the most impressive memories in the entire animal kingdom
Red Tail Boa (common boa)
Red tailed boas don’t suffocate their prey, they squeeze until the heart stops circulating blood to the brain.
Red-winged blackbird
The male red-winged blackbird can sing to attract mates
Redback Spider
The redback spiders found in New Caledonia differ from other populations in that they don’t practice sexual cannibalism and don’t bite people as much.
Redstart
They build their nests off the ground in tree holes, cavities, stone walls, and roofs
Reindeer
Also known as the Caribou
Reticulated python
These popular pets can get big enough to kill their owner.
Rhea
Male rheas mate with up to a dozen females and single-handedly raise up to 80 chicks at once!
Rhesus Macaque
Rhesus Macaques are the most widely distributed primate in terms of geographic diversity
Rhombic Egg-Eater Snake
When birds aren't nesting, these snakes fast
Ribbon Eel
Can fit its body into a tiny crevice of a reef
Ring-billed Gull
The ring-billed gull feeds on vast quantities of human waste and garbage.
Ringed Kingfisher
Dives from perches to capture its prey!
Rinkhals Snake
This snake is known for playing dead as a defense against predators.
River Otter
The river otter can hold its breath for up to 8 minutes
Roadrunner
Roadrunners are one of the few animals that prey on rattlesnakes and tarantula hawk wasps.
Rock Crab
Males will fight each other to get to females.
Rock Hyrax
Actually related to Elephants and Manatees!
Rockhopper Penguin
There are 3 different species!
Roe Deer
The roe is one of the most popular game animals in Europe
Roosevelt Elk
The main predators of this species are grey wolves, mountain lions, black bears, and humans.
Rose-Breasted Grosbeak
This bird is also called "cut-throat" because the male looks like his throat has been cut and has bled over his breast.
Roseate Spoonbill
The only Spoonbill in the western hemisphere!
Rosy Boa
One of the few snakes that naturally comes in a rainbow of colors!
Rough Earth Snake
It has a pointed snout that is uses to burrow into moist soil.
Rough Green Snake
Rough green snakes are great pet snakes because they're low-maintenance.
Rough-Legged Hawk (Rough-Legged Buzzard)
Its scientific name, lagopus, is Ancient Greek for “hare” and “foot,” referring to its feathered feet and toes.
Ruby-Throated Hummingbird
Ruby-throated hummingbirds can beat their wings more than 50 times per second.
Ruddy Duck
Ruddy duck breeding males have bright blue bills!
Russel’s Viper
A Russel's viper strike is so forceful it can lift its entire body off the ground.
Saanen Goat
The saanen goat is the most popular milk breed.
Sable
Their fur has been considered a luxury item since the Middle Ages
Sable Ferret
Ferrets were used during the Revolutionary War to keep down the rat population.
Salmon
Returns upstream every year to spawn
Salmon Shark
Salmon sharks are related to Great Whites.
San Francisco Garter Snake
The San Francisco garter snake is among the rarest snake species in the United States.
Sand Cat
They can survive for weeks without drinking water because the get moisture from their prey.
Sand Dollar
Sand Dollar skeletons make popular collection items for seashell collectors.
Sand Viper
Sand vipers are nuisance snakes in some areas.
Sandpiper
Some sandpipers can migrate more than 8,000 miles without stopping!
Sardines
Schools of sardines can be miles long and are often visible from an airplane
Satanic Leaf-Tailed Gecko
They are called “phants” or “satanics” in the pet trade.
Saturniidae Moth
Some of the largest moths in the world
Savannah Monitor
Savannah monitors are one of the most popular lizards in captivity.
Savannah Sparrow
The Savannah sparrow gets its name because one of the first of this type of bird was found in the city of Savannah, Georgia.
Saw-scaled Viper
This is the smallest venomous snake in India's Big Four.
Scale-Crested Pygmy Tyrant
They raise their crests to ward off predators
Scallops
Scallops begin their lives by attaching to sea grass on the ocean floor.
Scarlet Kingsnake
Scarlet kingsnake’s pattern is an example of Batesian mimicry.
Scarlet Macaw
Like many parrots, the scarlet macaw is capable of vocal mimicry.
Scissor-tailed Flycatcher
Scissor-tailed flycatchers are known for their dramatically long tails!
Scorpion
There are around 2,000 known species!
Sculpin
Its skull bones can compress so the fish can fit in narrow spaces
Sea Anemone
Creatures have characteristics of both animal and plant
Sea Bass
Sea bass can grow up to 880 pounds in weight!
Sea Eagle
The sea eagle tends to mate for life with a single partner
Sea Roach
They breathe through gills but live on land
Sea Slug
All sea slugs have both male and female sex organs
Sea Trout
Change colors in freshwater and saltwater
Seagull
Some gulls are capable of using tools
Sedge Warbler
Males never sing the same song twice
Senegal Parrot
As a pet, the Senegal parrot is capable of "talking" to its owner
Serval
Can leap more than 1 meter into the air!
Sharp-Shinned Hawk
In captivity, sharp-shinned hawks can live up to 13 years. However, in the wild, this number is significantly reduced to 3 years!
Sharp-Tailed Snake
This snake uses its sharp tail to steady itself when capturing prey.
Sheep
Around 35 million in the English countryside!
Sheepshead Fish
This fish has teeth that resemble a human's.
Short-Eared Owl
The short-eared owl is one of the most widespread owl species in the world, covering five continents.
Shrew
The spinal column of the shrew Scutisorex somereni is so strong and reinforced that it can support the weight of an adult human.
Betta Fish (Siamese Fighting Fish)
Can live in low-oxygen environments!
Sika Deer
Sikas can make 10 different sounds, from soft whistles to loud screams.
Silkie Chicken
Silkie hens are excellent mothers and will raise any bird as their own, even being known to patiently sit on a clutch of duck or geese eggs until they hatch.
Silver Dollar
Closely related to the Piranha
Skink Lizard
Some skinks lay eggs in some habitats while giving birth to skinklets in other habitats.
Skipjack Tuna
The skipjack is the most commonly caught tuna in the world
Skua
Skuas will chase other birds until they give up their catch
Skunk
Also known as the Polecat!
Slow Worm
Found widely throughout British gardens!
Smallmouth Bass
A fierce fighter!
Smooth Earth Snake
Valeria Biddle Blaney (1828-1900) collected the first specimen in Maryland.
Smooth Snake
These snakes are sometimes confused with common adders, but lack the zigzag pattern.
Snail
There are nearly 1,000 different species!
Snapping Turtle
Only found in North America!
Snook Fish
Males change into females after the spawning season
Snorkie
Snorkies are known for their funny, attention-getting antics.
Snouted Cobra
The snouted cobra, also known as the banded snouted cobra, is one of the most venomous snakes in all of Africa.
Snow Crab
Snow crabs communicate with each other by waving or drumming their pincers.
Snow Goose
The snow goose has a dark line along their beaks known as a ‘grinning patch’!
Snowberry Clearwing Moth
They are pollinators, just like bees.
Snowflake Eel
Snowflake Eel have two jaws to help them swallow their food.
Sockeye Salmon
Called "red salmon" because their skin turns bright red to dirty red during spawning season
Song Sparrow
Pumps its tail when it flies!
Song Thrush
A male song thrush can have over 100 phrases in his repertoire of songs and can imitate pet birds, telephones and other man-made objects.
Southern Black Racer
These snakes live underground, beneath piles of leaf litter or in thickets, and they are expert swimmers.
Southern House Spider
Large web making house spider
Spadefoot Toad
They spend most of their time underground!
Spalax
Spalax can live up to 54 years!
Spanish Mackerel
Spanish mackerel typically live to the age of 12, but there have been cases of these fish living as long as 25 years!
Spanish Water Dog
Spanish water dogs are popular with fishermen and hunters to retrieve game from the water.
Sparrow
There are 140 different species!
Sparrowhawk
The sparrowhawk is named after the fact that it hunts down and consumes sparrows
Speckled Kingsnake
The Salt and Pepper Snake
Spider Ball Python
The spider ball python is known for having a head wobble.
Spider Wasp
They prey on spiders to feed their larvae or they parasitize other spider wasps.
Spiny bush viper
These shaggy snakes are only 2 feet long and mostly arboreal.
Spitting Cobra
Spitting cobras are types of cobras that can spit venom at predators and prey.
Spotted Bass
Spotted bass tend to congregate in schools unlike other types of bass fish.
Spotted Gar
They are commonly mistaken as logs in the water due to their cylindrical body.
Spotted Garden Eel
Males battle each other over females and territory
Spotted python
Their favorite food is bats and they hang from cave entrances to snatch them out of midair!
Springbok
Springboks derive so much water from their food they could go their entire lives without drinking from large sources of water.
Squid
Some species are known to have 10 arms!
Squirrel Monkey
Lives in groups of up to 500 individuals!
Squirrelfish
Uses vibrations to communicate with other fish
Star-nosed mole
The star-nosed mole has the ability to sense both electrical fields and ground vibrations
Stargazer Fish
Uses an electric shock to stun its prey!
Stiletto Snake
Because of their unique venom delivery system, stiletto snakes are almost impossible to hold safely in the usual way (with fingers behind the head) without being bitten.
Stoat
Average adults weigh about 200 grams!
Stonechat
Their songs are harsh and sound like two rocks hitting together.
Stonefish
The most venomous fish in the world
Stork
They can’t sing like other birds.
Striped Bass
Pilgrims counted striped bass as an essential part of their diet from the time they arrived in North America.
Striped Rocket Frog
Long powerful hind legs!
Sugar Glider
Can glide for over 100 feet before touching the ground
Summer Tanager
They remove bee stingers by rubbing them against a tree
Sunbeam Snake
Sunbeam snakes have two lungs instead of just a single lung like most snake species.
Swainson’s Hawk
Their wings form a “V” shape when flying.
Swallow
swallows have aerodynamic bodies for hunting in flight
Swordfish
Lose their scales and teeth as adults
Tailless Whip Scorpion
The average lifespan of these strange creatures is 5 to 10 years; however, tailless whip scorpions have been known to live up to a whopping 15 years in captivity!
Taipan
The Most Venomous Snakes On Earth
Tamarin
These tiny yet intelligent monkeys often give birth to fraternal twins.
Tangerine Leopard Gecko
Unlike most geckos, tangerine leopard geckos have movable eyelids.
Tarantula
More than 1000 species of tarantulas have been identified all around the world!
Tarantula Hawk
Tarantula hawks are excellent pollinators, especially for milkweed.
Tasmanian Tiger Snake
The Tasmanian tiger snake gets its name from their banded skin, closely resembling a tiger's stripes.
Tawny Frogmouth
The tawny frogmouth is a master of camouflage that can hide in plain sight!
Tawny Owl
The most widespread owl in Europe!
Telescope Fish
Swallows food, much of it larger than them, whole
Tentacled Snake
Their tentacles have nerves that attach directly into the area of the brain that processes visual information.
Termite
Their mounds can be up to 9 meters tall!
Tetra
Native to the freshwater streams of South America!
Texas Blind Snake
These snakes grow to just 11 inches long
Texas Coral Snake
Texas coral snakes have the second most powerful venom in the world
Texas Garter Snake
These snakes defensively emit a foul-smelling musk if you handle them!
Texas Indigo Snake
Texas Indigo Snakes are known for chasing down, overpowering, and eating rattlesnakes.
Texas Night Snake
The Texas night snake has vertical pupils to help it see better at night.
Texas Rat Snake
The Texas rat snake is one of the most common subspecies of the western rat snake in the wild.
Texas Spiny Lizard
They hold push-up competitions!
Thorny Devil
Found only on mainland Australia!
Thresher Shark
Thresher Sharks have a distinctive, thresher-like tail.
Thrush
The American robin is called the robin because its red breast reminded European settlers of the robin back in the old country.
Tibetan Fox
Tibetan foxes are not territorial and will share a hunting ground with other mated pairs.
Tick
They inject hosts with a chemical that stops them from feeling the pain of the bite
Tiger Muskellunge (Muskie)
Massive carnivorous hybrid fish
Tiger Rattlesnake
These rattlesnakes have the smallest heads of any rattlesnake.
Tiger Salamander
Found across the North American wetlands!
Tiger snake
Tiger Snakes can spend nine minutes underwater without returning to the surface to breathe
Tire Track Eel
They like to burrow into aquarium sand.
Toadfish
Can be heard out of water
Tokay Gecko
The Tokay gecko gets its onomatopoeic name from its "To-kay!" barking call.
Torkie
The Torkie is alert and very vocal so it makes a great watchdog.
Toucan
There are more than 40 different species!
Tree Frog
Found in warmer jungles and forests!
Tree Snake
Though this snake’s venomous bite isn’t harmful to adults, it can be dangerous to children
Tree swallow
The tree swallow can make more than a dozen distinct vocalizations
Tree Viper (Bamboo Viper)
Pit vipers can strike accurately at moving objects less than .5 degrees Farenheit warmer than the background.
Treecreeper
Their tailfeathers help them maintain their balance on a tree trunk
Treehopper
The colors, shapes, and intricacies of treehoppers’ helmets makes them unique and visually stunning.
Triggerfish
There are 40 species of Triggerfish, all with different coloring and patterns.
Tropicbird
Nests on tropical islands and cliffs!
Trout
They don’t have scales for their first month of life!
Tsetse Fly
Tsetse flies are large biting flies that live in the tropical regions of Africa.
Tufted Coquette
They are tame and easy to approach
Tuna
The tuna has a sleek body that enables it to swim quickly through the water
Tundra Swan
“The tundra swan is entirely white except for a yellow marking at the base of their bill!”
Turaco
Their name means “banana-eater,” but they rarely ever eat bananas.
Turtle Frog
A turtle frog can eat more than 400 termites in a single meal.
Twig Snake
Twig snakes are among the few rear-fanged colubrids whose bite is highly venomous and potentially fatal.
Uaru Cichlid
The color of the Uaru cichlid changes during the spawning season
Uguisu
Their guano is used in face creams!
Uinta Ground Squirrel
The squirrel is named after the Uinta Mountains, which are part of the Rocky Mountain range and are found in Utah and Wyoming.
Unau (Linnaeus’s Two-Toed Sloth)
Its top speed is 0.17mph
Underwing Moth
Their colorful rear wing makes predators think that they are poisonous, however they are not it is a deceptive feature.
Upland Sandpiper
They make jerky movements as they walk through the grass, searching for food.
Ural owl
The Ural owl can rotate its head up to 270 degrees
Uromastyx (Spiny-Tailed Lizard)
Spiny-tailed lizards "sneeze" out salt!
Urutu Snake
The female Urutu snake grows longer and heavier than males of the same species
Vampire Bat
Have a heat sensor on the end of their nose!
Veery
The veery is named for its sharp "veer" call.
Vermilion Flycatcher
They have a fast song that lasts up to 10 syllables at max.
Vervet Monkey
Rarely found more than 450m from trees!
Vicuña
Vicuñas have some of the softest wool in the entire animal kingdom
Vine Snake
A slender body and elongated snout give the vine snake a regal look.
Viper
Vipers are one of the most widespread groups of snakes and inhabit most
Viper Boa
These boas aren't really vipers, they're nonvenomous constrictors that look like vipers.
Viper Shark (dogfish)
Most data on these fish is based on observations near Japan.
Viperfish
Viperfish have a bioluminescent spine on their dorsal fin.
Vole
Voles were heavily mentioned in a Star Trek series as a space station pest.
Wahoo Fish
Wahoo can change colors when they're excited and while they hunt
Walking Catfish
The walking catfish can move on land while breathing air
Wallaby
There are roughly 30 different species!
Walleye Fish
Has great night vision
Warthog
Has two sets of tusks on it's face!
Wasp
There are around 75,000 recognised species!
Water Vole
The largest Vole species in the UK!
Waterbuck
Often flee into water to escape predators
Wattled Jacana
They are typically noisy birds but take on a soft tone with their young.
Weasel
The smallest carnivorous mammal in the world!
Weaver Bird
The weaver constructs an elaborate nest for the breeding season
Wels Catfish
The Wels catfish is one the largest freshwater fish in the world.
Western Blind Snake
Western blind snakes are flourescent in black light!
Western Diamondback Rattlesnake
They replace their fangs 2-4 times per year!
Western Hognose Snake
Primarily solitary, these snakes only communicate with one another during breeding season.
Western Kingbird
Western kingbirds have hidden red crown feathers that they can raise when threatened!
Western Rat Snake
Western rat snakes have special scales on their belly that help them climb up trees.
Western Rattlesnake (Northern Pacific Rattlesnake)
Western rattlesnakes are shy and try to avoid people whenever possible.
Western Tanager
They migrate farther north than any other tanager.
Whimbrel
The fastidious whimbrel sometimes washes off its prey before it eats it.
Whinchat
The whinchat can imitate the songs of at least a dozen other tpes of birds!
Whiptail Lizard
Many whiptail species reproduce asexually.
White Bass
Silvery white fish popular with anglers
White Crappie
Common freshwater fish in North America
White-Crowned Sparrow
Males learn distinct songs from the community they grew up in and continue to sing in the same dialect as adults.
White-Eyed Vireo
During courtship, males put on exciting displays by fluffing their plumage, spreading their tails, and letting out a whining call.
White-Faced Capuchin
One of the world's most intelligent monkeys!
White Ferret / Albino Ferrets
There are two different types of white ferrets!
White Marlin
speedy open ocean billfish
White-tail deer
White-tail deer are good swimmers
Whitetail Deer
Although deer are herbivores, they will sometimes eat mice and birds when they can catch them.
White-Tailed Eagle
It is one of the biggest birds of prey.
Whiting
"Whiting" can refer to certain other species of ray-finned fish
Wild Boar
Males have a top tusk to sharpen the bottom one!
Willow Flycatcher
These birds live in the understory and are named for their propensity for flitting between willows and shrubs.
Willow Warbler
This bird molts twice a year.
Winter Moth
Only the males fly and the females walk.
Wolf Snake
Harmless, but with fangs like a wolf.
Wolf Spider
Carnivorous arachnid that hunts its prey.
Wolverine
Releases a strong smelling musk in defence!
Woma Python
Woma pythons often prey on venomous snakes and are immune to some venoms.
Wood Bison
The reintroduction of wood bison into Alaska is considered one of the world’s best conservation success stories.
Wood Duck
Adult male wood ducks sport a striking red eye and bill year-round!
Wood Frog
The wood frog lives the furthest north of any other North American amphibian including in the Arctic Circle.
Woodlouse
This animal can roll up into a ball
Woodlouse Spider
Unlike most spiders, woodlouse spiders don’t build a web.
Woodpecker
There are 200 different species!
Woodrat
Pack rats love shiny objects and will steal your jewelry.
Worm
Doesn’t have eyes.
Worm Snake
They emit a bad-smelling liquid if they are picked up!
Wrasse
There are more than 500 different species!
Writing Spider
males pluck webs like strings on a guitar
Wrought Iron Butterflyfish
Is endemic to Japan.
Wryneck
They feign death by making their bodies limp and closing their eyes.
Xeme (Sabine’s Gull)
They follow after seals and whales to eat their scraps.
Xerus
Squirrel that lives in burrows in Africa.
Yarara
Females are much larger than males
Yellow Anaconda
Anacondas take prey much bigger compared to body weight than other snakes.
Yellow Bass
Largest yellow bass ever recorded weighed 2.95 pounds
Yellow Bellied Sapsucker
The males are responsible for choosing the nesting tree most of the time. Luckily, cavity nests are often reused for multiple breeding seasons (up to 7 years.)
Yellow-Bellied Sea Snake
Sea snakes spend approximately 90% of their lives under water.
Yellow Bullhead Catfish
Bottom dwelling scavenger fish
Yellow Cobra
The Yellow Cobra belong to one of the most dangerous families in the world.
Yellow Crazy Ant
One of the top 100 worst invasive species!
Yellow Perch
Female Yellow Perch grom larger than the males.
Yellow Spotted Lizard
Gives birth to live young.
Yellow Tanager (Black-and-Yellow Tanager)
They swallow soft fruit whole
Yellowhammer
It interbreeds with the pine bunting
Yellowtail Snapper
Fast moving ocean fish with a long yellow stripe.
Yellowthroat
They forage near the ground, searching leaves for insects
Yoranian
These dogs are very intelligent and are great with children.
Zebra Finch
The male zebra finch creates a unique song by drawing inspiration from its parent or tutor
Zebra Mussels
A female zebra mussel can deposit 30,000 to 1,000,000 eggs each year!
Zebra Snake
The zebra snake is a black-hooded species of spitting cobra native to several of the southern countries of Africa.
Zebra Spitting Cobra
This snake can spit a distance of nine feet or further!
Zebrafish (Zebra Fish)
Used extensively in scientific research
Zebu
There are around 75 different species!
Zokor
Zokors are expert diggers. They burrow tunnels hundreds of feet long!
Least Concern Species List
- Aardvark
- Aardwolf
- Abyssinian Guinea Pig
- Acadian Flycatcher
- Adélie Penguin
- Admiral Butterfly
- Aesculapian Snake
- African Bullfrog
- African Civet
- African Clawed Frog
- African Fish Eagle
- African Jacana
- African Palm Civet
- African Tree Toad
- Agama Lizard
- Agkistrodon Contortrix
- Agouti
- Albino (Amelanistic) Corn Snake
- American Alligator
- Alligator Gar
- Alpaca
- Alpine Goat
- Amano Shrimp
- Amazon Tree Boa
- Amazonian Royal Flycatcher
- American Robin
- American Toad
- Amethystine Python (Scrub Python)
- Anaconda
- Anglerfish
- Angora Ferret
- Angora Goat
- Anna’s Hummingbird
- Anole Lizard
- Ant
- Antarctic Scale Worm
- Anteater
- Antelope
- Arabian Cobra
- Arctic Char
- Arctic Fox
- Arctic Hare
- Arctic Wolf
- Argentine Black and White Tegu
- Arizona Coral Snake
- Armadillo Lizard
- Armored Catfish
- Armyworm
- Asian Vine Snake
- Asian Water Monitor
- Asp
- Assassin Bug
- Atlantic Salmon
- Atlas Beetle
- Australian Firehawk
- Australian Flathead Perch
- Australian Gecko
- Avocet
- Baboon
- Baird’s Rat Snake
- Bald Eagle
- Bamboo Rat
- Banana Ball Python
- Banana Eel
- Banana Spider
- Banded Krait
- Banded Water Snake
- Barb
- Barbut’s Cuckoo Bumblebee
- Barn Owl
- Barn Spider
- Barn Swallow
- Barnacle
- Barracuda
- Barramundi Fish
- Barred Owl
- Basilisk Lizard
- Bass
- Bat
- Bat-Eared Fox
- Baya
- Bea-Tzu
- Beabull
- Bearded Dragon
- Bed Bugs
- Bee-Eater
- Beetle
- Belted Kingfisher
- Bighorn Sheep
- Bird Of Paradise
- Bismarck Ringed Python
- Black and White Warbler
- Black Bass
- Black-Bellied Whistling Duck
- Black-Capped Chickadee
- Black Crappie
- Black German Shepherd
- Black-headed python
- Black Mamba
- Black Rat Snake
- Black Sea Bass
- Black Swallowtail Caterpillar
- Black-Tailed Rattlesnake
- Black Throat Monitor
- Black Wasp
- Black Widow Spider
- Blackburnian Warbler
- Blackfin Tuna
- Bladefin Basslet
- Blanket Octopus
- Blind Snake
- Blister Beetle
- Blood Python
- Blue Belly Lizard
- Blue Catfish
- Blue Eyed Pleco
- Blue Gray Gnatcatcher
- Blue grosbeak
- Blue Jay
- Blue Nose Pit Bull
- Blue Racer
- Blue-Ringed Octopus
- Blue Tanager (Blue-Grey Tanager)
- Blue Tang
- Blue Tit
- Bluefish
- Bluegill
- Boas
- Bobcat
- Bobolink
- Boer Goat
- Boiga
- Bolivian Anaconda
- Bonito Fish
- Bonnethead Shark
- Booby
- Boomslang
- Bottlenose Dolphin
- Bowfin
- Bowhead Whale
- Brahminy Blindsnake
- Brazilian Treehopper
- Bredl’s Python
- Bronze-winged Jacana
- Brook Trout
- Brown Headed Cowbird
- Brown Tree Snake
- Brown Water Snake
- Budgerigar
- Buffalo
- Buffalo Fish
- Bull Shark
- Bullfrog
- Bullsnake
- Burrowing Owl
- Bush Baby
- Bush Viper
- Butterfly
- Cactus Mouse
- Cactus Wren
- Caecilian
- Caiman
- Caiman Lizard
- California Kingsnake
- California Tarantula
- Camel
- Camel Cricket
- Camel Spider
- Canada Lynx
- Canada Warbler
- Cane Rat
- Cantil
- Canvasback
- Capuchin
- Capybara
- Caracal
- Cardinal
- Carp
- Carpenter Ant
- Carpet Viper
- Cascabel
- Cashmere Goat
- Cassowary
- Cat-Eyed Snake
- Cat Snake
- Catahoula Bulldog
- Caterpillar
- Caucasian Shepherd
- Cedar Waxwing
- Centipede
- Central Ranges Taipan
- Chamois
- Checkered Garter Snake
- Chestnut-Sided Warbler
- Chicken
- Chicken Snake
- Chigger
- Children’s python
- Chimaera
- Chinese Geese
- Chinese Water Deer
- Chinook Salmon
- Chinstrap Penguin
- Chipmunk
- Chipping Sparrow
- Chiton
- Christmas Beetle
- Christmas Island Red Crab
- Cichlid
- Cinnamon Bear
- Cinnamon Ferret
- Clark’s Grebe
- Clearnose Skate
- Clownfish
- Coastal Carpet Python
- Coastal Taipan
- Coati
- Cobia Fish
- Cobras
- Cockle
- Cockroach
- Codling Moth
- Collared Peccary
- Colossal Squid
- Comb-crested Jacana
- Comet Moth
- Common Buzzard
- Common European Adder
- Common Frog
- Common Goldeneye
- Common Green Magpie
- Common House Spider
- Common Loon
- Common Raven
- Common Toad
- Common Yellowthroat
- Conger Eel
- Congo Snake
- Cookiecutter Shark
- Cooper’s Hawk
- Coral Snake
- Corella
- Cormorant
- Corn Snake
- Cosmic Caterpillar
- Costa’s Hummingbird
- Cottonmouth
- Coues Deer
- Cougar
- Coyote
- Crab-Eating Fox
- Crab-Eating Macaque
- Crab Spider
- Crabeater Seal
- Crappie Fish
- Crocodile
- Crocodile Monitor
- Crocodile Shark
- Crocodylomorph
- Cross Fox
- Crucian Carp
- Cuban Boa
- Cuban Cockroach
- Curly Hair Tarantula
- Damselfish
- Danios
- Dark-Eyed Junco
- Dark-Eyed Junco
- Darkling Beetle
- De Brazza’s Monkey
- Deathwatch Beetle
- Deer Mouse
- Desert Kingsnake
- Desert Locust
- Diamond Python
- Diamondback Moth
- Dickcissel
- Dik-Dik
- Diminutive Woodrat
- Dinosaur Shrimp
- Diving Duck
- Dormouse
- Downy Woodpecker
- Doxle
- Draco Volans Lizard
- Dragon Eel
- Dragon Snake (Javan Tubercle Snake, Javan Mudsnake)
- Dried Fruit Moth
- Duck
- Dumeril’s Boa
- Dung Beetle
- Dunnock
- Dwarf Boa
- Dwarf Gourami
- Dwarf Hamster
- Eared Grebe
- Earwig
- Eastern Bluebird
- Eastern Brown Snake
- Eastern Chipmunk
- Eastern Coral Snake
- Eastern Cottontail
- Eastern Fence Lizard
- Eastern Glass Lizard
- Eastern Gray Squirrel
- Eastern Hognose Snake
- Eastern Indigo Snake
- Eastern Kingbird
- Eastern Phoebe
- Eastern Racer
- Eastern Rat Snake
- Eastern Tiger Snake
- Eastern Turkey (Wild Turkey)
- Echidna
- Eclectus Parrot
- Edible Frog
- Eel catfish
- Eelpout
- Egret
- Egyptian Cobra (Egyptian Asp)
- Egyptian Goose
- Eland
- Electric Catfish
- Electric Eel
- Elephant Beetle
- Elephant Fish
- Elephant Seal
- Elephant Shrew
- Elf Owl
- Elk
- Emerald Toucanet
- Emerald Tree Boa
- Emerald Tree Monitor
- Emperor Angelfish
- Emperor Tamarin
- Emu
- English Angora Rabbit
- English Crested Guinea Pig
- English Longhorn Cattle
- Equatorial Spitting Cobra
- Ermine
- Escolar
- Eurasian Beaver
- Eurasian Bullfinch
- Eurasian Collared Dove
- Eurasian Eagle-owl
- Eurasian Jay
- Eurasian Lynx
- Eurasian Nuthatch
- Eurasian Sparrowhawk
- European Bee-Eater
- European Goldfinch
- European Polecat
- European Robin
- European Starling
- European Wildcat
- Evening Bat
- Executioner Wasp
- Eyelash Viper
- Fairy-Wren
- Fallow deer
- False Cobra
- False coral snake
- False Water Cobra
- False Widow Spider
- Fancy Mouse
- Fangtooth
- Fennec Fox
- Ferruginous Hawk
- Fiddler Crab
- Fierce Snake
- Finch
- Fire-Bellied Toad
- Fire Eel
- Fire Salamander
- Firefly
- Fish
- Fisher
- Fishing Spiders
- Flamingo
- Flathead Catfish
- Flea
- Flea Beetle
- Florida Gar
- Flounder
- Flounder Fish
- Fluke Fish (summer flounder)
- Fly
- Flying Fish
- Flying Lemur
- Flying Snake
- Flying Squirrel
- Football Fish
- Forest Cobra
- Fox Snakes
- Fox Squirrel
- Freshwater Crocodile
- Frigatebird
- Frilled Lizard
- Frilled Shark
- Fritillary Butterfly
- Frogfish
- Fruit Bat
- Fruit Fly
- Fulvous Whistling Duck
- Furrow Bee
- Gadwall
- Gar
- Garden Eel
- Gargoyle Gecko
- Genet
- Geoffroys Tamarin
- Gerbil
- Ghost Catfish
- Ghost Crab
- Giant African Land Snail
- Giant Salamander
- Giant Trevally
- Glass Frog
- Glass Lizard
- Goat
- Goblin Shark
- Goldcrest
- Golden-Crowned Kinglet
- Golden Eagle
- Golden Jackal
- Golden Oriole
- Golden Shiner
- Goldfish
- Goliath Tigerfish
- Goose
- Goshawk
- Gourami
- Grass Carp
- Grasshopper
- Grasshopper Mouse
- Gray Catbird
- Gray Fox
- Gray Tree Frog
- Great Blue Heron
- Great Crested Flycatcher
- Great Plains Rat Snake
- Great Potoo Bird
- Green Anaconda
- Green Anole
- Green Bee-Eater
- Green Frog
- Green Mamba
- Green Rat Snake
- Green Snake
- Green Tree Frog
- Green Tree Python
- Grey Heron
- Grey Mouse Lemur
- Griffon Vulture
- Ground Snake
- Ground Squirrel
- Groundhog (Woodchuck)
- Grouper
- Grouse
- Guinea Fowl
- Guinea Pig
- Gulper Eel
- Guppy
- Gypsy Moth
- Habu Snake
- Hairy Frogfish
- Hairy Woodpecker
- Hammond’s flycatcher
- Hamster
- Harbor Porpoise
- Harbor Seal
- Hardhead Catfish
- Harlequin Coral Snake
- Harp Seal
- Harris’s Hawk
- Hartebeest
- Hawk Moth Caterpillar
- Hedgehog
- Hepatic Tanager (Red Tanager)
- Heron
- Herring Gull
- Highland Cattle
- Hoary Bat
- Hognose snake
- Holy Cross Frog
- Honey Badger
- Honey Buzzard
- Hooded Oriole
- Hook-Nosed Sea Snake
- Hoopoe
- Hornbill
- Argentine Horned Frog
- Horned Viper
- Hornet
- Horse Mackerel
- Horsefly
- Horseshoe Crab
- House Finch
- House Sparrow (English Sparrow)
- House wren
- Howler Monkey
- Human
- Humpback Whale
- Huntsman Spider
- Ibis
- IMG Boa Constrictor
- Impala
- Imperial Moth
- Indian Cobra
- Indian Giant Squirrel
- Indian Palm Squirrel
- Indianmeal Moth
- Inland Taipan
- Insects
- Irukandji Jellyfish
- Jabiru
- Jacana
- Jack Crevalle
- Jackal
- Jackdaw
- Jackrabbit
- Jaguarundi Cat
- Japanese Bantam Chicken
- Japanese Beetle
- Japanese rat snake
- Japanese Squirrel
- Jellyfish
- Jerboa
- Joro Spider
- Jungle Carpet Python
- Junglefowl
- Kangaroo
- Kangaroo Mouse
- Katydid
- Keel-Billed Toucan
- Keelback
- Kelp Greenling
- Kentucky Warbler
- Kenyan Sand Boa
- Kestrel
- Kiang
- Killdeer
- King Eider
- King Mackerel
- King Penguin
- King Quail
- King Rat Snake
- King Salmon
- King Vulture
- Kinkajou
- Kissing Gourami
- Kit Fox
- Klipspringer
- Knight Anole
- Koala
- Kodiak Bear
- Kudu
- Labout’s Fairy Wrasse
- Labrottie
- Lace Bug
- Lace Monitor
- Ladyfish
- Lamprey
- Landseer Newfoundland
- Largemouth Bass
- Laughing Kookaburra
- Lawnmower Blenny
- Lazarus Lizard
- Least Flycatcher
- Leech
- Lemur
- Leopard Cat
- Leopard Frog
- Leopard Gecko
- Leopard Shark
- Leopard Tortoise
- Lesser Jacana
- Lesser Scaup
- Linnet
- Lionfish
- Little Penguin
- Lizardfish
- Llama
- Loach
- Lobster
- Locust
- Long-Eared Owl
- Long-Tailed Tit
- Long-Winged Kite Spider
- Longnose Gar
- Lorikeet
- Lungfish
- Lynx
- MacGillivray’s Warbler
- Madagascar Hissing Cockroach
- Madagascar Tree Boa
- Maggot
- Magnolia Warbler
- Mahi Mahi (Dolphin Fish)
- Malayan Krait
- Mallard
- Mamba
- Mamushi Snake
- Mandarin Rat Snake
- Mangrove Snapper
- Marble Fox
- Marine Toad
- Marmot
- Marsh Frog
- Masked Angelfish
- Masked Palm Civet
- Massasauga
- Mealybug
- Meerkat
- Megamouth Shark
- Merganser
- Mexican Eagle (Northern crested caracara)
- Mexican Free-Tailed Bat
- Mexican Mole Lizard
- Milk Snake
- Milkfish
- Millipede
- Moccasin Snake
- Mojarra
- Mojave Rattlesnake
- Mole Cricket
- Mole Snake
- Monkey
- Monkfish
- Monocled Cobra
- Moonglow Boa
- Moorhen
- Moose
- Moray Eel
- Mountain Beaver
- Mountain Bluebird
- Mountain Lion
- Mourning Dove
- Mourning Gecko
- Mourning Warbler
- Mouse
- Mozambique Spitting Cobra
- Mud Snake
- Mudpuppy
- Mudskipper
- Mule
- Mule Deer
- Mulga Snake
- Mullet Fish
- Muntjac
- Muscovy Duck
- Muskox
- Muskrat
- Mussurana Snake
- Myna Bird
- Naked Mole Rat
- Needlefish
- Nematode
- Neon Tetra
- Neptune Grouper
- Newt
- Night Adder
- Night Heron
- Night Snake
- Nightingale
- Nile Crocodile
- Nile Monitor
- Nilgai
- No See Ums
- North American Black Bear
- Northern Alligator Lizard
- Northern Cardinal
- Northern Flicker
- Northern Harrier
- Northern Jacana
- Northern Parula
- Northern Pintail
- Northern Potoo
- Northern Water Snake
- Norway Rat
- Nose-Horned Viper
- Nudibranch
- Nuthatch
- Nutria
- Nyala
- Oak Toad
- Oarfish
- Ocean Whitefish
- Ocelot
- Octopus
- Oilfish
- Old House Borer
- Oleander Hawk Moth
- Olive Baboon
- Olive python
- Olive Sea Snake
- Olympic Marmot
- Opah
- Opossum
- Oranda Goldfish
- Orange-Crowned Warbler
- Orange Tanager (Orange-Headed Tanager)
- Orchard Oriole
- Orchid Dottyback
- Oribi
- Oriental Cockroach
- Oriental Dwarf Kingfisher
- Ornate Bichir
- Ortolan Bunting
- Ostrich
- Owl
- Ox
- Oxpecker
- Oyster
- Oyster Toadfish
- Ozark Bass
- Painted Bunting
- Painted Turtle
- Paradise Flying Snake
- Parakeet
- Parrot Snake
- Parrotlet
- Partridge
- Patas Monkey
- Peacock
- Peacock Butterfly
- Pelican
- Peppered Moth
- Peppermint Angelfish
- Perch Fish
- Peregrine Falcon
- Peringuey’s Adder
- Pheasant
- Pheasant-tailed Jacana
- Pied-Billed Grebe
- Pig
- Pigeon
- Pika
- Pike Fish
- Pileated Woodpecker
- Pinacate Beetle
- Pine Marten
- Pine Siskin
- Pine Snake
- Pine Snake
- Pink-Necked Green Pigeon
- Pipe Snake
- Pipefish
- Piranha
- Pit Viper
- Plains Hognose Snake
- Polecat
- Polyphemus Moth
- Pompano Fish
- Pond Skater
- Pool Frog
- Porcupine
- Possum
- Potoo
- Prairie Dog
- Prawn
- Pronghorn
- Puff Adder
- Pufferfish
- Puffin
- Puma
- Purple Finch
- Purple Gallinule
- Pygmy python
- Pygmy Shark
- Pyjama Shark
- Python
- Quail
- Rabbit
- Raccoon
- Raccoon Dog
- Racer Snake
- Rainbow Boa
- Rainbow Kribs (Kribensis)
- Rainbow Shark
- Rat
- Rat Snakes
- Rattlesnake
- Red-Bellied Black Snake
- Red-Bellied Woodpecker
- Red-Billed Quelea Bird
- Red Deer
- Red Diamondback Rattlesnake
- Red Drum Fish
- Red-Eared Slider
- Red-Eyed Tree Frog
- Red Finch
- Red-handed Tamarin
- Red Kite
- Red-Lipped Batfish
- Red Nose Pit Bull
- Red Paper Wasp
- Red Racer Snake
- Red-Shouldered Hawk
- Red Spitting Cobra
- Red Squirrel
- Red Tail Boa (common boa)
- Red-winged blackbird
- Redback Spider
- Redstart
- Reindeer
- Reticulated python
- Rhea
- Rhesus Macaque
- Rhombic Egg-Eater Snake
- Ribbon Eel
- Ring-billed Gull
- Ringed Kingfisher
- Rinkhals Snake
- River Otter
- Roadrunner
- Rock Crab
- Rock Hyrax
- Rockhopper Penguin
- Roe Deer
- Roosevelt Elk
- Rose-Breasted Grosbeak
- Roseate Spoonbill
- Rosy Boa
- Rough Earth Snake
- Rough Green Snake
- Rough-Legged Hawk (Rough-Legged Buzzard)
- Ruby-Crowned Kinglet
- Ruby-Throated Hummingbird
- Ruddy Duck
- Russel’s Viper
- Saanen Goat
- Sable
- Sable Ferret
- Salmon
- Salmon Shark
- San Francisco Garter Snake
- Sand Cat
- Sand Dollar
- Sand Viper
- Sandhill Crane
- Sandpiper
- Sardines
- Satanic Leaf-Tailed Gecko
- Saturniidae Moth
- Savannah Monitor
- Savannah Sparrow
- Saw-scaled Viper
- Scale-Crested Pygmy Tyrant
- Scallops
- Scarlet Kingsnake
- Scarlet Macaw
- Scissor-tailed Flycatcher
- Scorpion
- Sculpin
- Sea Anemone
- Sea Bass
- Sea Eagle
- Sea Roach
- Sea Slug
- Sea Trout
- Seagull
- Sedge Warbler
- Senegal Parrot
- Serval
- Sharp-Shinned Hawk
- Sharp-Tailed Snake
- Sheep
- Sheepshead Fish
- Short-Eared Owl
- Shrew
- Betta Fish (Siamese Fighting Fish)
- Sidewinder
- Sika Deer
- Silkie Chicken
- Silver Dollar
- Skink Lizard
- Skipjack Tuna
- Skua
- Skunk
- Slow Worm
- Smallmouth Bass
- Smooth Earth Snake
- Smooth Green Snake
- Smooth Snake
- Snail
- Snapping Turtle
- Snook Fish
- Snorkie
- Snouted Cobra
- Snow Bunting
- Snow Crab
- Snow Goose
- Snowberry Clearwing Moth
- Snowflake Eel
- Sockeye Salmon
- Song Sparrow
- Song Thrush
- Southern Black Racer
- Southern House Spider
- Spadefoot Toad
- Spalax
- Spanish Mackerel
- Spanish Water Dog
- Sparrow
- Sparrowhawk
- Speckled Kingsnake
- Spider Ball Python
- Spider Wasp
- Spiny bush viper
- Spitting Cobra
- Spotted Bass
- Spotted Gar
- Spotted Garden Eel
- Spotted python
- Springbok
- Squid
- Squirrel Monkey
- Squirrelfish
- Star-nosed mole
- Stargazer Fish
- Stiletto Snake
- Stoat
- Stonechat
- Stonefish
- Stork
- Striped Bass
- Striped Rocket Frog
- Sugar Glider
- Summer Tanager
- Sunbeam Snake
- Swainson’s Hawk
- Swallow
- Swordfish
- Tailless Whip Scorpion
- Taipan
- Tamarin
- Tangerine Leopard Gecko
- Tarantula
- Tarantula Hawk
- Tasmanian Tiger Snake
- Tawny Frogmouth
- Tawny Owl
- Telescope Fish
- Tentacled Snake
- Termite
- Tetra
- Texas Blind Snake
- Texas Coral Snake
- Texas Garter Snake
- Texas Indigo Snake
- Texas Night Snake
- Texas Rat Snake
- Texas Spiny Lizard
- Thorny Devil
- Thresher Shark
- Thrush
- Tibetan Fox
- Tick
- Tiger Muskellunge (Muskie)
- Tiger Rattlesnake
- Tiger Salamander
- Tiger snake
- Tiger Swallowtail
- Tiger Swallowtail Caterpillar
- Tire Track Eel
- Toadfish
- Tokay Gecko
- Torkie
- Toucan
- Tree Frog
- Tree Snake
- Tree swallow
- Tree Viper (Bamboo Viper)
- Treecreeper
- Treehopper
- Triggerfish
- Tropicbird
- Trout
- Tsetse Fly
- Tufted Coquette
- Tufted Titmouse
- Tuna
- Tundra Swan
- Turaco
- Turkey
- Turkey Vulture
- Turtle Frog
- Twig Snake
- Uaru Cichlid
- Uguisu
- Uinta Ground Squirrel
- Unau (Linnaeus’s Two-Toed Sloth)
- Underwing Moth
- Upland Sandpiper
- Ural owl
- Uromastyx (Spiny-Tailed Lizard)
- Urutu Snake
- Vampire Bat
- Veery
- Vermilion Flycatcher
- Vervet Monkey
- Vicuña
- Vine Snake
- Viper
- Viper Boa
- Viper Shark (dogfish)
- Viperfish
- Vole
- Wahoo Fish
- Walking Catfish
- Wallaby
- Walleye Fish
- Warthog
- Wasp
- Water Vole
- Waterbuck
- Wattled Jacana
- Weasel
- Weaver Bird
- Wels Catfish
- Western Blind Snake
- Western Diamondback Rattlesnake
- Western Green Mamba
- Western Hognose Snake
- Western Kingbird
- Western Rat Snake
- Western Rattlesnake (Northern Pacific Rattlesnake)
- Western Tanager
- Whimbrel
- Whinchat
- Whiptail Lizard
- White Bass
- White Crappie
- White-Crowned Sparrow
- White-Eyed Vireo
- White-Faced Capuchin
- White Ferret / Albino Ferrets
- White Marlin
- White-tail deer
- Whitetail Deer
- White-Tailed Eagle
- Whiting
- Wild Boar
- Willow Flycatcher
- Willow Warbler
- Winter Moth
- Wolf Snake
- Wolf Spider
- Wolverine
- Woma Python
- Wood Bison
- Wood Duck
- Wood Frog
- Woodlouse
- Woodlouse Spider
- Woodpecker
- Woodrat
- Wool Carder Bee
- Woolly Bear Caterpillar
- Worm
- Worm Snake
- Wrasse
- Writing Spider
- Wrought Iron Butterflyfish
- Wryneck
- Xeme (Sabine’s Gull)
- Xerus
- Yarara
- Yellow Anaconda
- Yellow Bass
- Yellow Bellied Sapsucker
- Yellow-Bellied Sea Snake
- Yellow Bullhead Catfish
- Yellow Cobra
- Yellow Crazy Ant
- Yellow Perch
- Yellow Spotted Lizard
- Yellow Tanager (Black-and-Yellow Tanager)
- Yellow Tang
- Yellowhammer
- Yellowish Cuckoo Bumblebee (formerly Fernald’s Cuckoo Bumblebee)
- Yellowtail Snapper
- Yellowthroat
- Yoranian
- Zebra Finch
- Zebra Mussels
- Zebra Snake
- Zebra Spitting Cobra
- Zebrafish (Zebra Fish)
- Zebu
- Zokor
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