The official mammal class is Mammalia. Types of animals that are mammals include warm-blooded vertebrates that have hair or fur and whose babies drink milk. Unlike other animal types like birds and insects, all mammal babies drink milk that comes from their mother’s bodies. This is one of the key ways to know if an animal is a mammal.
What Are Mammals? – The 10 Characteristics You Need to Know
Mammals have many other unique characteristics compared to other animal types. You can use some of these key mammal markers to identify whether an animal is a mammal:
- Warm-blooded vertebrates – Mammals are endothermic, meaning they have a constant body temperature. Mammals are also vertebrates, meaning they have a backbone
- Red Blood Cells Without Nucleus – Mammals have adult (mature) red blood cells, known as erythrocytes, that lack a nucleus. This is unique compared to other vertebrates.
- Has hair or fur – Mammals commonly have hair, or fur. Though hair and fur are chemically similar and both made of keratin, they are characteristically different. Hair is normally longer and thinner than fur, while fur is usually shorter and coarser. Both serve as insulators for animals.
- Contains a Malleus, Incus, and stapes – The Malleus is a small bone in the middle ear that is shaped like a hammer. It connects the inner surface of the eardrum with the incus. Given it’s shape, the name is derived from the latin word for ‘mallet’. The incus is shaped like an anvil and serves a similar function, vibrating to transmit sound. The stapes is a stirrup shaped bone. Together they form the ‘hammer, anvil, and stirrup’, three of the smallest bones in the human body. The stapes is the actual smallest.
- Able to produce milk – Mammals contain mammary glands. These glands give them the ability to produce milk to feed their offspring.
- A diaphragm – Mammals have a diaphragm sitting between their heart and lungs
- Hinged Lower Jaw Connected To Skull – Mammals have a hinged lower jaw that connects directly to the skull. By comparison, all over vertebrates connect through another bone known as the quadrate. This mammal articulation allows them to more easily grasp and chew food, as well as chew sideways.
- Left aortic arch – In mammals, the fourth (left) pharyngeal artery is most commonly the arch of the aorta. This differs compared to other animal types. There can be rare cases where mammals have a right aortic arch variant.
- Neocortex – Mammals commonly have a neocortex in their brain. This specialized region allows them to both hear and see.
- Live Birth6 – Mammals are viviparous, meaning they give birth to live babies. There are three different types of mammal birth. Monotremes, marsupial, and placental mammals, discussed further below.
There are some exceptions to the mammal criteria. Whales are mammals but they are born without hair or fur as it has typically gone after the fetal stage. Yes, that means the blue whale is in fact a mammal!
Monotremes like the duck-billed platypus and echindnas are a whole category of egg-laying mammals that are the only mammals which do NOT give birth to live young. Instead, animals like the platypus and echindnas actually lay eggs.
The Three Different Types of Mammal Births
A rare and unusual category of mammal birth where the animal lays eggs. There are only five known monotremes mammals on the planet, with the platypus and echidna’s being the most well known.
Marsupial mammals give birth to their young before they are fully developed. The babies then complete their growth outside of the mother but in a ‘pouch’. Well-known marsupial examples include kangaroos, opossums, and wombats.
Members of this birth group have a birth procedure containing a placenta. The presence of a placenta transfers important nutrients between the mother and offspring, helping protect the young and ensure a well-developed birth. Placental births are the most common among all mammals with examples including dogs, horses, cats, and humans.
Which Types of Animals Are Mammals?
Can move 2ft of soil in just 15 seconds!
The aardwolf has five toes on its front paws
The oldest breed of cat in the world!
The hooves of the addax are splayed and have flat, springy soles, one of the adaptations that help it walk over sand.
First bred in 17th century Germany!
First used as a shepherd and hunter!
Can drink up to 50 gallons a day
Secretes up to 4g of musk every week!
Have large rounded ears to help keep them cool!
Solitary but gathers in groups!
Also known as the painted dog!
This dog has a thick coat of fur despite its origins in Morocco, a country known for its hot temperatures.
An innate sense of direction!
Very intelligent, independent and strong-minded!
This is a great pooch for rough-housing and one-to-one.
Often used as a guard dog!
Very clean, intelligent and loyal!
The Akita Shepherd descends from a lineage of working dogs.
The Alabai’s genes indicate that this breed has been around for more than 5,000 years.
The Alaskan Husky is one of the most common sled dogs in the world
The Alaskan Klee Kai is very vocal and isn't shy when communicating with his family.
This dog’s Malamute ancestors once came to America across the Bering Strait.
They can spit up to 10 feet.
Good companion and hard-working breed!
Alpine goats are the most common type of goat used for milk, cheese, and other dairy products
Alusky dogs are known for their sledding pulling skills.
Also known as the 'Pink Dolphin'
Merry, outgoing, and eager to please!
Easygoing and people-friendly!
The American Eskimo has splendid all white fur and an upturned tail
Sweet, kind, loyal, and very loving!
The American hairless terrier comes in two varieties with one having a very short coat.
This breed is also known as the American Leopard Cur. The name was formally changed to American Leopard Hound in 2008.
These dogs are very energetic and would be up for a game at any given point of time
Bred to be extremely friendly!
Friendly and intelligent!
The Amur leopard may be the rarest big cat on Earth!
Guards it's master's flocks!
Was created as an accident.
Each adult Angora goat produces about 12 inches of mohair annually while kids have about 8 inches.
Found throughout the Southern Hemisphere!
Renew their horns every year!
Love to learn, especially through observation
Apple Head Chihuahuas are toy breed dogs with a history dating back to ancient Mexico. They are lovable, loyal, smart and courageous with a lengthy lifespan despite being the world's smallest canines.
Extremely thick winter fur!
Eats berries found in the snow!
Incredibly versatile and adaptive!
Can curl into a hard, protective ball!
Domesticated for hundreds of years!
It mainly eats mangos and coffee!
Known to eat 160 different tree-borne fruits in Thailand!
Extinct ancestor of all domesticated cattle!
The breed has its own popular Instagram page (Aussiedoodles Daily)!
Aussiedors come in black, brown, cream, yellow, and almost every imaginable color due to their parentage!
The Aussie is a strong swimmer, a good workout in nice weather.
High energy levels and active minds!
Friendly, intelligent and energetic!
The "Australian" just refers to where the breed originated
The Australian Retriever may have two different eye colors.
Sweet, faithful and affectionate!
Spirited, alert and courageous!
Found only in one complex of lakes!
Thought to be extinct until 1957!
Babirusas can stand on their back hooves to eat leaves on the lower branches of a tree.
Can travel more than four miles a day!
The camel with two humps!
Can reach speeds of 30 km/h!
“Sings” a whale song during breeding season.
Playful and energetic breed!
The Balkan lynx communicates mostly with its ears
Markings give it camouflage!
Bandicoot Many species are endangered or extinct!
This dog has the nickname ‘Mud dog’ because it likes to play in muddy, swamp-like areas.
Alert, affectionate and energetic!
This dog is also known as a Bassetdor or a Basset Lab.
A friendly and intelligent hunting dog that loves nothing more than to spend time with its owner.
Forget the training when not rewarded!
Basset hounds have been around since the 7th century, but the bassetoodle made its first appearance in the 2000s.
Detects prey using echolocation!
The Bea-Tzu has a fast-growing coat
An excellent companion for cats!
Beagadors like to dig, so make sure your garden has a good fence around it.
Have become popular family pets!
This dog can perform a wide range of exotic and acrobatic tricks that are not expected of a dog this size.
These dogs have great sniffer abilities
Beagos are good swimmers like their Golden Retriever parent.
There are 8 different species!
Weekly brushing is mandatory!
Beaskis love to play, so get ready to go on plenty of long walks.
The Beauceron is named after the place of its origin (Beauce) in France
Builds a dam from sticks and leaves!
Highly active and intelligent dogs!
Beefalo meat is leaner and higher in protein than beef
The sheepdog is also known as the Groenendael. All four Belgian varieties have nicknames for Belgian villages.
The first breed to win an AKC Herding Championship.
The most numerous species of tiger!
Bergamascos are excellent problem solvers; they were bred to be independent as they work alongside their nomadic shepherd owners.
Berger means shepherd in French
The Bernedoodle was first bred in 2003 to create a dog with a similar temperament to the Bernese Mountain Dog that would have a longer lifespan.
Very loyal, faithful and affectionate!
Bernese shepherds prefer cool climates
Gentle mannered, playful and affectionate!
Despite its small size, the alert nature and sharp bark of this canine make it a good watch dog.
A toy terrier dog and is elegant and tri-colored.
Bighorn rams can run at speeds up to 40 miles per hour when fighting for dominance.
In Australia, the chocolate bilby replaces the chocolate bunny for Easter.
Also known as the Asian Bearcat!
Also known as the Sacred Cat of Burma!
Largest mammal in North America!
This dog has its own unique howl.
Confident, calm and highly intelligent!
Black footed ferrets are the only ones native to North America.
Affectionate, gentle and even-tempered!
Originated in Texas in the mid 1800s!
The Blue Picardy is also known as the Epagneul Bleu de Picardie in French
The largest animal on Earth
Has an uncanny knack for problem-solving!
About double the size of a domestic cat!
Boggles at animal rescues are often mistaken for pitbulls because they have a similar facial structure.
Boglen terriers are also occasionally known as boggles.
From the northern Italian city of Bologna!
Bred to look like a black panther!
Long and heavy spiralled horns!
Shares 97% of the same DNA as humans!
Boradors make excellent police dogs and are used often on search and rescue missions.
Highly intelligent and alert breed!
Small, rough-coated breed of terrier!
Bordoodles are much quieter than other Doodles and require far less exercise.
Most Borkies inherit the signature howl of their Beagle parent.
Known to use large leaves as umbrellas!
The smallest species of elephant!
Friendly, lovable and very strong!
Stays in groups from 15 to 2,000 in number!'
The name Bouvier des Flandres means cowherd of Flanders in French
Bowhead Whales can make hundreds of distinct songs they use to communicate with one another.
Boxadors are extremely smart and catch onto backyard games very quickly!
Bright, energetic and playful!
The Boxerdoodle has a strong hunting dog lineage.
Boxers were bred to be working war dogs, and their boxsky descendants still love to help out on ranches and other outdoor jobs.
Boxweilers come in a variety of colors, but they usually feature the subtle brindle pattern that their boxer parents are so famous for.
Enthusiastic working dog!
Small body and tri-coloured coat!
The breed was formerly known as the Brittany spaniel
A dominant predator in it's environment!
These small, confident dogs have no fear of approaching much larger dogs.
The Brussels Griffon prefers to live with another dog so they have a companion to play with.
Has no real natural predators!
Unpredictable and aggressive temperament!
Friendly, loving and docile!
Courageous, loyal and calm!
Adoring, elegant and affectionate!
In a series of leaps, this creature can cover almost 30 feet of distance in just a few seconds.
In hot temperatures, they lower their metabolism and become inactive to reduce the amount of water they need to survive
Intelligent, lively and strong!
Can survive without water for 10 months!
Has a strong survival instinct!
They have natural snowshoes
Canadian horses are believed to generate more power per pound of body weight than any other horse breed in the world.
Cane Corsos nearly became extinct in the mid 1900’s, but the breed was revived by a group of Italians. Even so, they still didn’t become known in many other parts of the world until after 1988.
Despite its large, muscular body, the Cape lion actually rests more than 20 hours a day
Excellent at both diving and swimming
Has 20 different muscles in it's ears!
Males and females grow antlers
Wild dog breed discovered in the 1970s!
Cashmere goat are named after Kashmir regions of India and Pakistan
First domesticated by the Ancient Egyptians!
The state of Louisiana's only native dog breed
This breed is called the Gos d’Atura Catala in native Catalan and Pastor Catalan in Spanish, both of which roughly translate to mean Catalan Sheepdog
Females are more territorial than males, but you can train this behavior out of them.
The Cavador is a good service dog.
Highly playful and affectionate!
The temperament of a Cavapoo allows this breed to make an excellent family dog as well as a great therapy dog.
An affectionate hunting dog!
This breed is also known as the Bohemian Terrier (Bohemia was an historical Medieval kingdom and a region of the modern Czech Republic)
There are more than 160 different species!
Natively found in the European mountains!
Some Cheagles have an excellent sense of smell.
The fastest land mammal in the world!
Bright and happy disposition!
Curious and devoted personality!
Has 32 teeth including fang-like canines!
Natively found in the Andes Mountain range!
These dogs have a blue and black tongue.
A calm and friendly breed!
There are 25 different species!
The Chipoo was first bred in the 1970s
Chiweenies travel especially well.
Chorkies are very fond of their owners and will love to sit in their laps for long amounts of time!
Loyal and affectionate to it's family!
The Chow Shepherd is also known as the Sheprachow.
A ferret’s heartrate is 200 to 250 beats a minute.
Has canines that can be two inches long!
Found in dense forests and wet jungles!
The Cockalier has very strong hunting ancestry.
Cockapoos became popular in the 1960s as a sweet, family dog.
Form bands of up to 12 individuals!
Most active in wet weather!
Corgidors are herding dogs that typically help out on cattle farms.
These dogs are highly intelligent and are easy to train.
One of the Corkie’s parent breeds, the Cocker Spaniel, was thought to have come over on the Mayflower.
Corman Shepherds can be great watchdogs and are often very protective of their owners.
The soft coat of the Coton de Tulear is the result of a singular genetic mutation early in the breed's development.
Found in tropical forest edges!
The Second Largest feline in North America
There are nearly 1.5 million worldwide!
Also known as the Prairie Wolf!
Found throughout the South-East Asian jungles!
The crabeater seal doesn’t actually eat crab at all, but instead krill
The cross fox’s tail is bushier than the tail of the average red fox
A lively and fun-loving breed!
Has a long, strong prehensile tail!
This breed is also known as the Czechoslovakian Vlcak (the name for the German Shepherd).
This hybrid dog is also known as a Doxador or a Weinerdor.
Fun and playful breed of small dog!
Dalmatians were originally bred to run alongside carriages, and their dalmadoodle descendents have the same long legs and high energy.
Dalmador breeding skyrocketed after the 16 release of the live-action 101 Dalmatians movie.
Have an energetic and playful nature!
A Dapple Dachshund’s dappling pattern may be just one spot, or it may be numerous spots and splashes on their coat.
There are around 40 different species!
The Chihuahua is the smallest dog breed in the world.
Has long drop ears and a long narrow tail!
Only 2,000 left in the wild!
A dik-dik is named after a sound it makes when it is frightened
Natively found on the Australian continent!
A gentle, loyal and loving breed!
First domesticated in South-East Asia!
Loyal and affectionate to their family!
Extremely loyal and devoted to it's master!
Can reach speeds of up to 25 mph!
First domesticated 5,000 years ago!
The Dorgi is one of the more popular mixed breed dogs.
Dorkies are so laid-back they sometimes need extra incentive to exercise each day.
Found in Europe, Africa and Asia!
When these monkeys want to mate, they wiggle their eyebrows.
Doxiepoos are an unpredictable breed that can come in a variety of appearances and sizes.
Doxles have long floppy ears
Uncommon outside of Europe!
Closely related to the Manatee!
A friendly and relaxed dog!
Communicates using whistles, squeaks and clicks!
dwarf hamsters love to explore at night.
Digs funnel-shaped holes in search of insects
The name chipmunk is derived from an Ojibwe word that means “one who descends the trees headfirst.”
The largest primate in the world!
Less than 5,000 in the wild!
Also known as the Spiny Anteater!
An ancient breed of domestic cat!
Both females and males have horns.
Spends around 22 hours a day eating!
The largest species of seal in the world!
Found exclusively on the African continent!
Adult males can jump eight feet vertically
Has an elegant white moustache!
Bulldogs were originally bred to “pin” bulls.
Intelligent yet stubborn by nature!
Although their coats can get incredibly light in color, golden retrievers never have purely white coats.
English Foxhounds were bred to work and live in a pack. Because of this, this breed is happiest when they are around other dogs.
English Setters were first bred between 400 and 500 years ago.
Highly intelligent and independent!
Friendly and eager to please!
Native to parts of the Swiss Alps!
Hard-working, gentle and affectionate!
A very bold and ferocious predator!
Takes pure delight in cold weather!
Eskipoos are called pookimos by the American Canine Hybrid Club, Designer Dogs Kennel Club, and Designer Breed Registry.
Very protective and stubborn!
Eats 20% of its weight daily!
Eurasian lynxes can survive extreme weather up to elevations of 18,000 feet
Coloring depends on location.
Its fur changes color in the winter!
A group of wild cats is called a destruction
The evening bat is one of the few bats that regularly has twins
The fallow deer has more variation in its coat colors than most other deer.
The false killer whale looks like a cross between a dolphin and orca!
The word feisty derived from this type of dog.
Found in the African Sahara Desert!
Ferrets can be trained to do tricks like dogs!
A sociable and adaptable breed!
The breed has a unique, cat-like gait, while females have a finer gait than males.
Found throughout ocean waters worldwide!
The fisher is an agile climber and makes its home in tree hollows
Scoops fish out of the water using it's paw!
A game retrieving gun-dog!
Florida panthers can leap more than 4.5 meters (15 feet) in the air.
The second pair of upper incisors in a flying lemur has a double root, which is unique for mammals.
Can glide up to 90 meters!
Formosa is the Portuguese term for the island of Taiwan
Most closely related to the Mongoose!
There are 12 different species in the world!
Although it is a tree squirrel, it spends most of its time on the ground.
First bred in the mid-19th century!
French bulldogs are known to be very sensitive, harboring emotions that they love to express
Loyal small dogs, the Frenchton will keep you warm at night with loving cuddles, but also awake with their funny loud snoring!
Frengles have a haunting howl very similar to their Beagle parent.
Among the largest bats in the world
Found only in the Northern Hemisphere!
Named for the Arabic word for love poems
The Genet has retractable claws like a cat
Has distinctive V shape on head!
German Shepherds, Siberian Huskies, and Gerberian Shepskies are all popular choices for police dogs.
Originally known as the Desert Rat!
Highly intelligent and fast learners!
Highly active and fearless dogs!
The German Sheppit is well-suited for guarding and police work.
There is a chance that the German Sheprador may inherit a love for water from its parent.
German Shorthaired Pointers are used by the Air Force, TSA, and other organizations to sniff out explosives.
There are five different sub-breeds of the German Spitz.
Armadillos have a smell that’s described as strong, sweet and acrid.
Bamboo makes up 99 per cent of their diet!
Large, powerful and dominant!
Both parents of the Giant Schnoodle are hypoallergenic, making this one of the Doodle breeds that's safest for dander-sensitive owners.
Found in dense jungles and tropical forests!
Long, black tongue can grow to 18 inches long!
Glechons are talented in the area of search and rescue, as their sense of smell makes them great at tracking.
This dog is also named the Wicklow Terrier after the county of its origin.
Most closely related to the Sheep!
These dogs are great around children and are very playful around them.
Goldadors were not intentionally bred until the early 2000s!
Golden doxes don't have to be tiny. This breed looks different depending on whether the mix includes a regular dachshund or the mini version of the species.
Native to the eastern rainforests of Brazil!
These dogs love to swim and instinctively know how to swim.
Golden Pyrenees make great therapy dogs due to their intelligence and gentle nature.
Trusting, kind and gentle!
Golden saints come in all kinds of colors. You can find them in tan, chocolate, yellow, brindled, spotted, and almost any other pattern you can think of.
The Golden Shepherds were first recognized by the International Designer Canine Registry in 2009.
They eat figs almost exclusively
Due to their breeding, no two Goldendoodles are alike.
They dig large networks of tunnels!
It's the largest and heaviest breed of setter.
The biggest of the world's primates!
The grasshopper mice attack predators using the poison of their venom.
The gray fox has retractable claws and a rotating wrist that allow it to climb trees with some proficiency
Large and imposing in appearance!
Both Great Danes and Poodles are in the top 15 most popular AKC breeds - which makes Great Danoodles a shoo-in for popularity.
Protective and gentle by nature!
Strong and speedy breed of dog!
The largest species of mouse lemur!
One of the rarest species of seal on Earth
Extremely fast and athletic!
Griffonshires are so little they are easily mistaken for puppies throughout their lives.
Less than 10% make it into adulthood
Although developed as a herding dog, the breed makes an excellent guard and working dog and is used by police forces and the military.
Natively found in the Andes Mountain range!
Able to run as quickly backwards as forwards!
Harbor seals can dive as deep as 1400 feet
Can reach speeds of over 40 mph!
The harp seal can migrate up to 3,000 miles every year
Cheerful, tolerant and sweet-tempered!
These are the only dogs that are native to Cuba
The exact appearance of a Havapoo can vary based on whether the genes of its Poodle or Havanese parent are more dominant.
Both of the Havashire’s parent breeds were very popular among the upper classes.
Hawaiian name is "Ilio-holo-i-ka-uaua," meaning "the dog which runs in rough waters.
Thought to be one of the oldest mammals on Earth!
Natively found in the Scottish Highlands!
Also known as the Colourpoint Persian!
Has pink anti-bacterial sweat!
The hoary bat travels hundreds of miles south for the winter
Known for its bravery and ability to withstand the cold.
One of earth's bravest creatures!
Hooded seal pups are called bluebacks because the color of the fur on their back is blue-gray. This pretty color made people want to make fur coats out of them and made them a target for hunters.
Horgis have a silly side and love to be the center of attention.
Has evolved over 50 million years!
Spends 80% of it's time resting!
Thought to have orignated 200,000 years ago!
Huntaways have a strong instinct for herding.
Huskadors are gaining in popularity as service dogs.
Huskitas prefer a consistent daily routine with lots of activity.
To communicate, Siberian Huskies rarely bark but instead create their own music and howl.
Due to the mix of genes, a Husky Jack’s coat may be a variety of colors including black, gray, white, red, sable, or mixed colors.
Huskydoodles are known for their jumping abilities!
There are four different species!
Can jump over 6 feet straight up from a standstill
Intelligent, active and engaging by nature!
The Icelandic Sheepdog is the only dog breed entirely native to Iceland.
Able to jump over 10 feet high
Found throughout south-east Asia!
Indian giant squirrels use their large tail to help them balance.
Natively found in parts of India and Sri Lanka!
Also known as the one-horned rhino!
Now thought to be extinct in China!
The largest species of Lemur!
Irish Doodles can be very active dogs, but they also love just hanging out with their family members in the house.
Can live for up to 16 years!
An average 300 Irish Terrier puppies are born each year in the United States.
The only known canine with a purple hue.
Sweet-tempered, patient and thoughtful!
The Italian Greyhound is a miniature dog with a big motor and personality!
Intelligent, athletic and fearless!
The Jackabee has an excellent sense of smell.
Can maintain speeds of 16 km/h!
They can run as fast as 45 mph.
The largest feline on the American continent!
These cats are expert swimmers.
Alert, intelligent and independent!
Has cheek pouches for storing food!
The Japanese Spitz is sometimes referred to as a cloud dog.
The Japanese squirrel hoards its food for the winter
Japanese Terriers are also called Nippon Terriers
Only has a 25cm long horn!
Features that closely resemble a Siamese cat!
Tiny rodent with a kangaroo-like jump!
Kai Ken are a very rare breed of dog from Japan, though pure breeds are even harder to come by.
Can run up to 35 miles per hour (56km).
Females have a deep pouch on their front!
Merriam’s kangaroo rats literally never have to drink water
They are born black, and turn gray-blue as they age.
Bucks grow new antlers every year.
Kiko goats breed year-round, and they are not good at defending themselves.
Typically consumes over 200 kg of food a day!
This hybrid breed is the largest among the shepherd class.
The kinkajou is a nimble forest-dwelling mammal of Central and South America.
Once raised to hunt dangerous game like boar, today's kishu ken are more likely to be used as guard dogs.
The kit fox is the smallest canid in North America.
Spends up to 80% of the time sleeping or resting!
The kodkod is among the smallest species of cats in the entire world
If Kooikerhondjes look familiar, it’s because old Dutch masters like Rembrandt and Jan Steen liked to paint them.
The name "koolie" comes from the German mispronunciation of "collie."
Lives in herds of up to 24 individuals!
Ownership of this dog was once restricted to the Hungarian nobility
The AKC does not recognize this breed or the parent breed Catahoula
Loves to participate in activities.
Labradanes can come with both sold-color coats and the more exciting patterns that you typically see on Great Danes.
Friendly and energetic mix-breed!
Well-balanced, friendly and versatile!
These dogs have medium-sized pendant ears.
These dogs were once used by farmers to keep foxes away from herds of sheep.
Have tiny ears named “gophers” or “elves”
The name “heeler” comes from the fact that it nips at the heels of cattle to herd them.
This breed is also known as the Lapp Reindeer Dog and the Lapsk Vallhund.
Does not hibernate during the bitter Arctic winter!
Natively found on the island of Madagascar!
This dog has been used for pulling carts full of goods.
Spends much of the time high in the trees!
There are 11 different species!
The world's most aggressive seal species!
The Lhasa Apso was often given as a gift in Tibetan culture
A Lhasapoo’s coat can be curly like a poodle’s or long and silky like a Lhasa Apso’s.
The offspring of a lion and tiger parents!
Lives in small groups called prides!
The little brown bat uses echolocation to quickly navigate around its environment
The Livyatan had 1 to 1.2 foot long, interlocking teeth
Natively found in the Andes Mountain range!
Rottweilers have a tendency to snore.
This breed is also known as the "Little Lion Dog" for their bravery and manes.
Live in dens in rocks and under ledges!
Macaque females will pass on their social rankings to their daughters
Will travel up to 70 miles in a single day.
Folklore says it's half cat, half raccoon!
Also known as the Oriental Civet!
Found in less-dense jungles!
Malteagles are one of the smallest beagle hybrids and love to follow their owners everywhere.
Originally bred in Europe!
Both parent breeds, the Maltese and Shih Tzu, once entertained royalty
Maltipoos may have one of three different coat types depending on the specific genes they inherit from their parents. These include silky, curly, or wavy.
Also known as the Sea Cow!
Fences are no match for Manchester terriers. They’re great escape artists!
Distinctively coloured noses and rumps!
Despite its name, the Maned Wolf is not actually a wolf.
The marble fox is not a naturally occurring variant; it was created through artificial selection.
Less than 2,500 left in the wild!
A marmot spends 80% of its life below ground
Found throughout Asia, India and China!
The Mastador gets its enormous size from its Mastiff parent
Courageous, calm and affectionate!
The Meagle has an incredible sense of smell.
One will stand on guard to watch for predators!
Some colonies have millions of bats
They can be trained to use the litter box like a cat!
The first mini labradoodle was bred in the early 1990s - almost immediately after standard labradoodles became popular.
This dog has a very happy-go-lucky temperament.
Stable rodents were kept in check by using it as a barnyard ratter.
The mink can swim up to 100 feet underwater.
There are two recognised species!
Primarily hunts and feeds on Earthworms!
Range in size from just 1 to 3 foot!
Has characteristics of two or more breeds!
There are around 260 known species!
Feeds on aquatic insects and water-spiders!
Renews it's enormous antlers every year!
A Morkie puppy can weigh as little as 4 ounces.
This Molosser-type dog is the Russian cousin of St. Bernard.
Mountain Feists were bred in the southern United States as a dog that could help with hunting small game.
Isolated populations found in the mountains!
Has no real natural predators!
Found on every continent on Earth!
Mudi dogs have a reputation for being able to control a herd of 500 sheep.
The offspring of a horse and donkey parents!
The muntjac is the smallest type of deer in the world
Muskox have several physical characteristics that allow them to survive in the Arctic climate.
The muskrat can stay underwater up to 17 minutes at a time
Naked mole rats don’t get cancer
Lives and hunts in the frigid Arctic!
Roamed Asia and Europe for around 100,000 years!
Fearless and extremely protective of it's home!
Introduced by Vikings more than 1,000 years ago!
Newfypoos have a thick oily coat that can be hard to groom.
Produces a lot of milk for its small size
Nilgai were hunted for their meat as far back as 8,000 years ago.
Fearless but not aggressive!
Short claws make them good tree climbers!
Dense underfur means they don’t need blubber to stay warm
The Norwegian Buhund once worked on Norse homesteads
This breed traveled with the Vikings!
Has a long, thick double coat of fur!
This breed is also called the Norsk Lundehund and the Norwegian Puffin Dog
Though Norwich terriers are small, they have a reputation for being feisty.
The Toller is one of only two breeds that hunters use as decoys while hunting.
The Nubian is a relatively large, proud, and graceful dairy goat that traces its ancestry to India and Egypt.
There are less than 1,000 left in the wild!
They have a high-pitched alarm call that sounds like a barking dog.
Also known as the Painted Leopard!
Eats more than 100 different types of plant!
Intelligent, sociable and playful!
Olive baboons will sometimes form strong friendships with each other
Thought to be immune to certain snake venom!
Shares 97% of its DNA with humans!
There are 13 different species worldwide
Otterhounds have webbed feet making them great swimmers!
Inhabits the jungles of the far east!
Bad eyesight, but great sense of smell
Prefers to hunt at night than during the day!
Originally called the Toy Spaniel, the Papillon is one of the oldest breeds in the toy group. They can be found in artwork dating back to the 16th century.
The root stock of the breed was a dog named Trump
The fastest species of primate in the world!
A Patterdale Terrier’s small body structure allows it to squeeze into fox burrows.
Peagles enjoy being the center of attention. This can make them a very entertaining breed to own.
Peekapoos were first bred in the 1950’s, making them one of the first designer dog breeds.
Thought to be over 2,000 years old!
The Pembroke Welsh Corgi is a favorite breed of Queen Elizabeth II
Has webbing between its toes, aiding in swimming!
The breed has feet like a cat, with rounded toes that are not too close together. His unique feet give him a distinctive, long, elastic stride.
Thought to have originated in the Middle East!
The Peruvian Inca Orchid is the national dog of Peru
A small dog with a big, lively personality.
Like their purebred parents, these dogs love the water!
Females lay between 8 and 12 eggs per clutch!
Only found in one area of Brazil!
Thought to have been domesticated in 9,000 BC!
Found in mountainous regions and rocky areas
A pine marten can jump from tree to tree similar to a squirrel.
The smallest known species of Armadillo
It is a myth that pit bulls have locking jaws.
There are several names for this breed, including the Labrabull or the Pitador Retriever.
Most Pitskies will do best as the only pet in a home. They may become aggressive with other dogs (especially two unneutered male dogs) and could try to chase or catch small pets due to their higher prey drive.
One of the only mammals to lay eggs!
Queen Elizabeth I of England once owned several Pocket Beagles
The smaller size of the Pocket Pitbull made it better suited for fleeing game as compared to larger Foxhounds.
An independent, loyal and high energy breed!
Could be extinct within the next 30 years!
Despite having shaggy hair that covers its eyes, this dog is known for its watchful gaze when guarding a herd.
Pomapoos like companionship and do not like being alone. They may do better in a home with other dogs.
A deliberate cross like the Pomchi is commonly referred to as a designer dog
Pomeagles are sweet and fun dogs that like to spend time exploring their environment.
The ancestors of the Pomeranian were sled dogs.
The howls and barks of a Pomsky can sound like singing
The Poochon was first bred in Australia.
Intelligent, alert and active!
The Poogle is one of 40 different doodle dog breeds (poodle mixes).
There are 30 different species worldwide!
Surprisingly, not a dolphin!
There are 69 species on the Australian continent!
They can carry items with their tail.
Prairie dog “towns” can consists of hundreds of individuals
Natively found on the island of Borneo!
The largest variety of kangaroo to have ever been discovered.
While pronghorns are the fastest runner of any Western Hemisphere land animal, they are not good jumpers.
Like their poodle parent, Pudelpointers love to swim in pools!
Fun and sociable, yet stubborn!
The pugapoo is the fusion of a pug and a poodle.
These dogs are active and are often patient around children.
With their incredible desire to show affection, Pugshire make great lap dogs.
Has longer back legs than front legs!
Pumik developed their loud bark to communicate with shepherds at long distances.
Spends more time on land than in water!
The Pygora goat is exclusively bred for their fleece, and they produce three different kinds.
Most popular as a companion pet
Pyredoodles can have a thick double coat or a thinner single coat.
The quagga is a subspecies of plains zebra.
Makes runways through the long grasses!
Found across Australia and Papua New Guinea!
There are more than 50 different species!
Known to wash their food before eating it!
The only hibernating canine!
Often referred to as "puppy-like," Ragamuffin cats are intelligent, friendly and super personable.
One of the larger breeds of domestic cat!
Raggles are known for their energy and curiosity.
Omnivores that eat anything!
Rat terriers were popular with farmers before 1930 because of their ability to kill rodents.
The red fox actually has many different variations of fur, including silver and brown.
There are less than 3,000 left in the wild!
The red squirrel has one of the most impressive memories in the entire animal kingdom
Red hair on hands on feet!
Originally bred to track raccoons.
Also known as the Caribou
It's horns are made from keratin!
The river otter can hold its breath for up to 8 minutes
Actually related to Elephants and Manatees!
The capybara, the world’s largest rodent, likes to be in and around bodies of water. Because of this, the Catholic Church in South America decided that it was a fish, and people were allowed to eat it during Lent and First Fridays.
The roe is one of the most popular game animals in Europe
Many Rottskies have one brown eye and one blue eye.
Strong, loyal and self-assured!
The Russell Terrier was bred to be a good fox hunter with a keen sense of smell
The bite of a Russian Bear Dog is stronger than a lion’s bite.
First brought to the UK in the 1800s!
The saanen goat is the most popular milk breed.
Canines up to 7 inches long!
Their fur has been considered a luxury item since the Middle Ages
According to the American Kennel Club, the German Shepherd is the second most popular breed in the United States
Ferrets were used during the Revolutionary War to keep down the rat population.
Large noses help filter out dust
Gentle, loyal and friendly!
These dogs have an eager-to-please attitude, making them sweet and happy pets.
The Saluki is one of the fastest dog breeds in the world.
Male sambars will compete for mates by clashing together with their antlers
Only known to science since 1992!
Savanna goats have only existed since 1957.
Schipperkes were used to hunt and kill rodents on Belgian ships.
This hybrid dog is a great companion and doesn’t do well being left alone but is suitable for apartments or houses with backyards!
Believed to be the inspiration for unicorn myths!
This breed is nicknamed the “Diehard” because of its iron will and steely determination.
It's flippers allow it to walk on the land
Eats over 40 different marine species!
There are 30 different species worldwide!
Very endangered breed that is scion of several breeds that include one that is already extinct
This whale is one of the fastest of the cetaceans
Can leap more than 1 meter into the air!
Around 35 million in the English countryside!
Sheepadoodles were first bred as an experiment for use as a military dog in the Army in the 1960s, however they didn’t really gain popularity until 2007.
Some police officers with allergies use Shepadoodles as their K-9 partner
These dogs can sometimes be overly aggressive.
The Shepweiler is an excellent guard dog.
Shiba Inus are one of six native dog breeds from Japan.
Can live for up to 15 years!
Shollies are a fairly new type of crossbreed!
The spinal column of the shrew Scutisorex somereni is so strong and reinforced that it can support the weight of an adult human.
Originated from temple cats in Thailand!
An exceptionally agile jumper!
Is adequately warm in sub-zero temperatures!
There’s a population of Siberian ibex in New Mexico
Many husky Labs have one blue eye and one brown eye.
Also known as the Amur tiger!
Although a lack of documentation makes it unclear, the first Siberpoo was probably bred in either the 1970s or 1980s.
Silky terriers can be trained to participate in many events, including herding, agility, rally, tracking and fly ball.
The Labrador is the most popular breed in the United States and most of these dogs have blue eyes at a young age, before they turn another color.
Also known as the Polecat!
Skye terriers are the oldest terrier breed, dating back at least 400 years.
It's body temperature is between 30 - 34 degrees!
These dogs are known for their fast digging abilities.
Snorkies are known for their funny, attention-getting antics.
Unlike other big cats, snow leopards don’t roar.
Thought to have originated in the 1960s!
An adult snowshoe hare can cover ten feet in a single jump.
Active, intelligent and playful!
There are less than 20 in the wild!
The Spanador is a good swimmer.
They have long, horizontal ears.
Diego Velázquez’s famous 17th century painting of the Infanta and her dwarves includes a portrait of a Spanish Mastiff.
Native to the Andes mountains of South America!
Found in the tropical jungles of South America!
They're one of the oldest hunting breeds on Earth.
The springbok has a large tuft of hair that emerges from a pouch on the back
Small rodents found in woodlands worldwide!
Lives in groups of up to 500 individuals!
Now restricted to a few parks!
It is a versatile, all-around working breed and pet.
Known for their loyalty to their family!
This dog’s facial hair makes it look like it has a beard.
The star-nosed mole has the ability to sense both electrical fields and ground vibrations
Hunted to extinction in 17 years!
Average adults weigh about 200 grams!
The striped hyenas usually mark their territories with the help of the scent gland secretions from their anal pouch.
Can glide for over 100 feet before touching the ground
Less than 2,000 left in the wild!
Known to make mental maps of the forest!
The smallest species of rhino!
The smallest species of tiger!
The smallest species of bear in the world!
Can get used to and respond to human voice
Taco terriers are known by a variety of names, including the Chitoxy Toy and the Chiwoxy.
The takin can leap some 6 feet through the air
Inhabits an isolated mountain range in northwestern Sumatra!
Most closely related to horses and rhinos!
Each eye weighs more than their whole brain!
Exclusively found on the island of Tasmania!
The Tasmanian tiger could open its mouth almost 90 degrees.
The oldest recorded teddy bear hamster was six and a half.
Often just called 'Teddies' by owners
There's a national celebration of Tennessee Walkers each year
These terriers have quick minds and fast feet making them excellent for agility competitions.
Terriers were once the greatest dogs in the world.
Though they are loyal to their family, these dogs can be shy around strangers.
In their native Thailand, Thai Ridgebacks were used to hunt cobras.
Tibetan foxes are not territorial and will share a hunting ground with other mated pairs.
Originally bred in the Himalayan mountains!
Originally bred to be a companion dog in Tibetan Buddhist lamaseries.
Tibetan terriers have round, flat, “snow shoe” feet that evolved to give them traction on snowy Himalayan paths
Eye color intensifies with age!
The largest feline in the world!
The Torkie has a soft silky coat
Hunters still use the toy fox to go into a fox's den and flush the animal out.
The word poodle is derived from German, and it means to splash or puddle.
The Transylvanian Hound is also known as the Erdelyi Kopo in Hungarian
It’s the only macropod that lives in trees.
Coarse baying cries during the hunt changes at the tree
The breed has several distinctive vocalizations, such as a long, yodeling call when he is on the hunt, and a short repeating bark once he trees his prey. Whining is normal as he anticipates the hunt.
Only found on a few of New Zealand's islands!
A breed that originated in central Turkey!
Have a very short tail for their size!
The squirrel is named after the Uinta Mountains, which are part of the Rocky Mountain range and are found in Utah and Wyoming.
The Uintatherium was an exceptionally large and exceptionally ugly ungulate that lived during the Eocene epoch
Have a heat sensor on the end of their nose!
Smallest cetacean in the ocean
Rarely found more than 450m from trees!
Vicuñas have some of the softest wool in the entire animal kingdom
Vizsla means searcher or tracker in Hungarian
Almost went extinct before American Eskimo Dog breeders showed interest.
There are roughly 30 different species!
Inhabits the freezing waters of the Arctic Circle!
Has two sets of tusks on it's face!
Has been domesticated for thousands of years!
The largest Vole species in the UK!
The smallest carnivorous mammal in the world!
The Weimaraner is nicknamed the gray ghost.
This dog is also known as the Weimarpoo, the Weimaranerpoo, and the Weimaranerdoodle.
There are two distinct breeds!
The Welsh Terrier has the strength and tenacity to take on foxes and badgers.
Most commonly white in colour!
There are two sub-species!
This dog is known for cocking its head in a curious manner when listening to its owner.
Originally bred as a farm dog, the Wheaten Terrier can be very protective of its domain.
Quiet, gentle and restful dogs!
There are two different types of white ferrets!
The second largest animal on the land!
None have been seen in the wild for 50 years!
One of the world's most intelligent monkeys!
White-tail deer are good swimmers
Whoodles are good swimmers
Males have a top tusk to sharpen the bottom one!
Can trek more than 1,000 miles every year!
The Wire Fox Terrier was bred from the now extinct Rough Coated Black and Tan Terrier to hunt down foxes.
A Wirehaired Pointing Griffon’s coat makes it look like it has a mustache and beard!
Thought to date back more than 300,000 years!
Releases a strong smelling musk in defence!
Spends most of the day underground!
The reintroduction of wood bison into Alaska is considered one of the world’s best conservation success stories.
Pack rats love shiny objects and will steal your jewelry.
Has a long, strong prehensile tail!
The woolly rhinoceros roamed the earth between three and a half million and 14,000 years ago.
Squirrel that lives in burrows in Africa.
The Xoloitzcuintli is the national dog of Mexico
There are only a few left in the wild!
The Yakute people were likely the first to use dogs to pull sleds, so the Yakutian Laika was probably among the first sled dogs.
These dogs are very intelligent and are great with children.
Yorkie Bichons can come in a wide range of colors including black, white, blonde, gray, golden, or dark brown.
The Yorkie-Poo originated from the hybrid poodle phase of the late 20th century
Highly energetic and eager for adventure!
Stripe patterns are unique to each individual!
There are around 75 different species!
The offspring of Zebra and Donkey parents!
The offspring of a Zebra and Horse parents!
The breed often changes colors throughout its life, with its puppy coat becoming lighter over the first few years of life, then darkening as he ages.
Is it a Mammal? Your Questions Answered
From rodents to whales and everything in between, it’s not always easy to tell which animals are mammals and which animals fall under another category such as fish, reptiles, or amphibians. If you’ve ever questioned whether or not one of these animals is a mammal, this is the list for you! Read on to find out more about which species are considered mammals and what makes them qualify as such.
- Are Sharks Mammals? Some shark species give live birth, but are they mammals since, unlike typical fish, their skeleton is made of cartilage? Find out more!
- Are Bats Mammals? It’s somewhat baffling — bats are capable of flight, so does that make them birds or mammals?
- Are Birds Mammals? Some birds, such as the kiwi, are flightless. Does that mean birds are classified as mammals? We’ve done the esearch.
- Are Humans Mammals? It may sound like a ailly question, but are humans animals or mammals? And if we’re mammals, how do we differ from other mammalian creatures?
- Are Marsupials Mammals? There are over 250 species that are classified as marsupials. But are they mammals?
- Are Penguins Mammals? Penguins can swim under water and traverse the land, but they lay eggs. Do they qualify as mammals?
- Are Fish Mammals? There are some species of fish that can breathe air, but are they considered mammals?
- Are Chickens Mammals? Chickens have feathers, beaks, a four-chambered heart, and they lay eggs. DOes that make them a mammal or a bird?
- Are Rodents Mammals? Rodents have hair, tails, teeth, and they give live birth — is that enough to make them mammals?
- Are Dogs Mammals? Have you ever wondered whether or not man’s best friend is a mammal? Read on to find out!
- Are Platypuses Mammals? Platypuses lay eggs while mammals do not. They are also semi-aquatic. But is it possible that platypuses are still mammals?
- Are Seals Mammals? There are over 30 species of seals, and they live all over the world. They have fur, they’re semiaquatic, and they happpen to have flippers. So, are they mammals or not?
- Are Elephants Mammals? Elephants are warm-blooded vertebrates that nurse their young, but they aren’t covered in fur like most mammals. Or are they?
- Are Turtles Mammals? Is a turtle a mammal or a reptile? Turtles breathe air and don’t lay their eggs underwater. Find out more!
- Are Cats Mammals? How many mammalian traits do cats have? Is it enough to classify them as mammals?
- Are Armadillos Mammals? An armadillo certainly looks reptilian, with its hairless body. But is it a reptile or a mammal?
- Are Owls Mammals? Owls hunt small animals, but are they considered to be one themselves?
- Are Coconuts Mammals? Coconuts share some interesting characteristics with mammals, including the fact that they possess hair and milk. Read on to find out more about their similarites and differences.
- Are Snakes Mammals? Some snakes give birth to live young, yet they’re cold-blooded. Does this make snakes a mammal or a reptile?
List of Mammals
Mammals by Letter Lists
Jump to a filtered list of Mammals that start with a specific letter!
What Are Mammals: Explained FAQs (Frequently Asked Questions)
What is considered a mammal?
Mammals are those animals that have some of the 10 characteristics listed above. The most notable mammal characteristics include having hair or fur, having live births, and feeding their young milk.
What animals are Mammals?
There are nearly 6,500 publicly recognized mammal species with more being discovered all the time. Popular mammal examples include cats, dogs, horses, elephants, whales, and humans.
Are whales mammals?
Yes! Whales are marine mammals. Surprisingly, they even exhibit one of the hallmark traits of mammals and even have hair. Though, whales mostly have hair in the womb and it is mostly gone at or slightly after birth.
What is the largest mammal on earth?
The largest mammal on earth is the blue whale. At over 100ft in length and 350,000lbs blue whales are also the largest animal alive on earth today, as well as the largest animal that has ever lived!
What did mammals evolve from?
Mammals are believed to have evolved from reptiles during the triassic period (approximately 200 – 250 million years ago), specifically of the order Therapsida.
What is the smallest mammal?
At approximately 1.6 inches long and less than 1 ounce the smallest known mammal on earth today is the Etruscan Shrew.