Discover, Appreciate, & Understand the Animal World!

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See All Animals A-Z!

We believe that if people know more about the world’s creatures they will better care for them. That’s why we add new animals for you to discover – each and every day! Learn about any animal using the search box below or subscribe to our YouTube Channel. Also, be sure to check out our growing list of Animal Quizzes and Web Stories.

Discover Your Favorite Animal Today!

Latest from A-Z Animals

10 Birds That Spend Their Winters in New York

Not all birds migrate South for the winter, in fact, many are perfectly comfortable braving the cold temperatures. Although we might not see them as often, the truth is that… Read More

By Alanna Davis 3 mins ago

Zebra Goes Out Swinging by Kicking Violently at the Lion Pride Pinning It Down

Hooves Fly Wildly In a Last Ditch Effort From a Doomed Zebra! In the incredible video at the top of the page, a tragic sight takes place. A zebra is… Read More

By Chris Madden 9 mins ago

All About the Alexandrine Parakeet: Personality, Diet, Habitat & More

The Alexandrine parakeet is a medium-sized parrot from the Psittaculidae family, which contains Old World parrots. These popular pet birds are named after Alexander the Great, who transported numerous birds… Read More

By Niccoy Walker 21 mins ago

200+ Cool-Sounding Hawaiian Cat Names and Their Meanings

The Hawaiian Islands truly embody a tropical paradise, brimming with rich culture and stunning natural beauty. While you might not get to spend each day basking on the islands' sun-kissed… Read More

By Kellianne Matthews 23 mins ago

The 6 Largest Cemeteries in the United States

The United States gained independence on July 4, 1776. Since then, many enormous and sprawling cemeteries have popped up throughout the country. Some of these burial grounds are reserved for… Read More

By Erica Scassellati 32 mins ago

12 Dinosaurs Discovered In The Last 10 Years

Move over, T-Rex and Stegosaurus — there are new dinos in town. Though dinosaur discoveries sound like an activity of the past, archeologists continue to unearth incredible fossils of new… Read More

By Katarina Betterton 41 mins ago

See This Pet Alligator Get His Own Pool Indoors… Yes, Pet Alligator!

The internet is full of unique ways that people care for their pets which include adorable clothes, carriages to ride around in like kings and queens, and pet-designed furniture that… Read More

By Hannah Crawford 49 mins ago

Discover the Most Beautiful College Campus in Each of the 50 States

College campuses can be extraordinary places, with some being more beautiful than others. While beauty varies for everyone, it’s hard to argue that these campuses aren’t stunning. Here is the… Read More

By Sarah Barkley 54 mins ago

Bear’s Head Tooth Mushroom Vs Lion’s Mane Mushroom: 8 Key Differences

There are few mushroom species as similar as the bear’s head tooth mushroom and the lion’s mane mushroom. With their white and spiny body, only a few differences separate their… Read More

By Micky Moran 59 mins ago

The 7 Main Types of Animals And Their Characteristics

There are many different types of animals in the world, but some of the largest categories include:

Mammals around the world!


The official mammal class is Mammalia. Animals that are considered 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.

See the complete list of mammals.

Close up of a colorful lizard


Lizards, dinosaurs, crocodiles, turtles, and snakes – all belong to that ancient and stout class of animals known as the reptiles. This is a diverse group with more than 10,000 different species and a huge representation in the fossil record. Once the dominant land vertebrates on the planet, reptiles still occupy just about every single ecosystem outside of the extreme north and south.

See the complete list of reptiles.

Beta fighting fish


Fish are aquatic vertebrates. They usually have gills, paired fins, a long body covered with scales, and tend to be cold-blooded. “Fish” is a term used to refer to lampreys, sharks, coelacanths and ray-finned fishes, but is not a taxonomic group, which is a clade or group containing a common ancestor and all its descendants.

See the complete list of fish.

Colorful birds


Birds, members of the class Aves, include more than 10,400 living species. Their feathers distinguish them from all other classes of animal; no other animals on earth have them. If you see an animal with feathers, it’s undoubtedly a bird. Like mammals, birds are warm-blooded vertebrates with four-chambered hearts. However, they are more closely related to reptiles and are believed to have evolved from dinosaurs.

See the complete list of birds.

Golden eyed leaf frog


The official class of amphibians is Amphibia. To have the classification of an amphibian, an animal must be a vertebrate, require water to survive, be cold-blooded, and spend time both on land and in water. Though other animals only live on land or in the water, amphibians have the unique ability to thrive equally in both. Amphibians cover over 6,000 different species across the globe, but about 90% are frogs.

See the complete list of amphibians.

Queen butterfly danaus gilippus on blue hydrangea flowers.


The definition of an invertebrate is any animal that does not have a backbone or vertebral column. The most prolific and easily recognizable members of the invertebrate family are insects. It’s estimated that upwards of 30 million individual species of invertebrates may exist accounting for between 90-95 percent of all organisms on the planet.

See the complete list of invertebrates.

Queen butterfly danaus gilippus on blue hydrangea flowers.


All insects are part of the taxonomical phylum Arthropoda, and they are collectively referred to as arthropods. It is common to see this name misspelled as “anthropod,” but this is not the correct term. They can be found in nearly every environment on the planet, and they currently account for over half of all known living organisms in the world. They have undergone many cycles of evolution depending on the resources available to them.

See the complete list of insects.

Explore Types of Wild Animals from Around the World

We track thousands of animals from every continent and corner on earth, and are adding more every day!

  • African Animals – Africa is home to some of the most incredible and dangerous animals in the world.
  • Asian Animals – Asia has the world’s longest coastline, and an amazing diversity of exotic animals, birds, and more.
  • Central American Animals – Discover the the nearly 400 different animals we track in Central America today.
  • Eurasian Animals – Eurasia has some of the rarest animals in the world, like Siberian Tigers and Snow Leopards.
  • European Animals – We track over 500 different animals in Europe, including wolves and bears.
  • North American Animals – North America has many beautiful national parks that house some of the rarest animals on earth.
  • Marine (Ocean) Animals – The ocean is teaming with life, from the smallest shrimp to the largest animal ever – the Blue Whale!
  • Oceanian Animals – Oceania has many islands, and the world’s highest concentration of marsupials.
  • South American Animals – Home to the stealthy Jaguar, the friendly Capybara, and many more!

See Endangered and Extinct Animals Lists

A-Z Animals follow’s the IUCN Red List of Threatened Species definitions of threatened and endangered animals. Please consult the lists below to learn more about which animals need our help the most

  • Extinct – Species that no longer exist on earth
  • Extinct in the Wild – Species that are only known to survive in captive or cultivated environments
  • Critically Endangered – Animals that face an extremely high risk of extinction in the wild
  • Endangered – Animal species that face a high risk of extinction in the wild
  • Vulnerable – Animal species that face a risk of extinction in the wild
  • Near Threatened – Species that are facing population challenges and likely to become vulnerable to extinction soon
  • Least Concern – Animals with strong populations that are not expected to face extinction risk in the near future
  • Data Deficient – Species where we lack adequate information to assess the risk
  • Not Evaluated – Animal species that have not been evaluated yet

Types of Animals By Letter: Explore A to Z Animal Lists

See lists of animals that start with every letter of the alphabet, from A to Z. We track all types of animals like lions and tigers, dogs and cats, even dinosaurs and spiders. Choose your favorite letter below to see all animals that start with it today.

A American Paddlefish
Animals that Start with A

Example: The American Paddlefish

A Black and White Warbler
Animals that Start with B

Example: The Black and White Warbler

A Cichlid
Animals that Start with C

Example: The Cichlid

A Desert Rain Frog
Animals that Start with D

Example: The Desert Rain Frog

A Electric Eel
Animals that Start with E

Example: The Electric Eel

A Freshwater Sunfish
Animals that Start with F

Example: The Freshwater Sunfish

A Horned Lizard
Animals that Start with H

Example: The Horned Lizard

A Ivory-billed woodpecker
Animals that Start with I

Example: The Ivory-billed woodpecker

A Jellyfish
Animals that Start with J

Example: The Jellyfish

A Kangaroo Rat
Animals that Start with K

Example: The Kangaroo Rat

A Leaf-Tailed Gecko
Animals that Start with L

Example: The Leaf-Tailed Gecko

A Marmoset
Animals that Start with M

Example: The Marmoset

A Northern Jacana
Animals that Start with N

Example: The Northern Jacana

A Olive Sea Snake
Animals that Start with O

Example: The Olive Sea Snake

A Pomsky
Animals that Start with P

Example: The Pomsky

A Quetzalcoatlus northropi
Animals that Start with Q

Example: The Quetzalcoatlus northropi

A Russian Bear Dog
Animals that Start with R

Example: The Russian Bear Dog

A Swallowtail Butterfly
Animals that Start with S

Example: The Swallowtail Butterfly

A Tully Monster
Animals that Start with T

Example: The Tully Monster

A Urial
Animals that Start with U

Example: The Urial

A Vulture
Animals that Start with V

Example: The Vulture

A Wirehaired Pointing Griffon
Animals that Start with W

Example: The Wirehaired Pointing Griffon

A Xeme (Sabine’s Gull)
Animals that Start with X

Example: The Xeme (Sabine’s Gull)

A Yorkiepoo
Animals that Start with Y

Example: The Yorkiepoo

A Zebra Spitting Cobra
Animals that Start with Z

Example: The Zebra Spitting Cobra

Everything To Know About Pet Dogs, Cats Birds, and More

Some of the most popular types of animals on earth are pets. A pet is a domesticated animal that lives with a person or family, usually in a house. The most common pets include dogs, cats, fish, and birds, but there are also many amazing exotic pets like reptiles, lizards, and more! Horses, goats, and pigs can also be pets too.

Pet Dogs

Dogs are the most popular type of pet on earth with nearly 500 million worldwide. Thats almost one dog for every 15 people on earth! There are hundreds of different dog breeds. The Irish Wolfhound is the largest dog breed, and was bred to hunt wolves. Chihuahuas are the smallest, and were likely bred for companionship or to hunt small rodents. The most popular dog breeds are below.

A Irish Setter
Irish Setter

Has a beautiful coat that's flowing and feathered!

A Boston Terrier
Boston Terrier

Friendly, lovable and very strong!

A Golden Retriever
Golden Retriever

Trusting, kind and gentle!

Pet Cats

Cats are the second most popular pet on earth with nearly 400 million worldwide. Thats almost one pet cat for every 20 people on earth! You can read about the hundreds of different cat breeds, from the large to the small. The most popular cat breeds are below

A Abyssinian

One of the oldest cat breeds in the world!

A Australian Mist
Australian Mist

The only cat breed to originate in Australia.

A Ragdoll

One of the larger breeds of domestic cat!

Pet Product Reviews

Pets are important members of our families and should be cared for. The AZ Animals team reviews the latest research on pet health, consults veterinarian best practices, and works directly with vet health specialists to review the best products for your dog, cat, and other pets. We’re excited to share our expert pet product recommendations with you, including the best dog food, best cat food, and best tanks for your pet fish

More Animal News, Facts, Rankings, and More!

2 Snakes That Are Invasive in Baja California

As Mexico’s 12th-largest state, Baja California has diverse geography ranging from beaches to deserts and even dense forests. It also has a diverse range of reptiles, particularly its snakes–in fact,… Read More

By Hailey Pruett 1 hour ago

Persian Kittens: Pictures, Adoption Tips, and More!

Is there anything in the world more precious than a little kitten? Those of you who have been thinking about adding one to your family might be researching different breeds… Read More

By Alanna Davis 1 hour ago

33 of the Cutest Venomous Creatures In the World

There are a lot of creatures in the world. From vertebrates to invertebrates; from mammals to birds — hundreds of thousands of species exist. Many are adorable to look at…… Read More

By Katarina Betterton 1 hour ago

The Top 11 Tallest Buildings in Vermont

Vermont is a quieter, greener state in the Northeastern US. It is probably the state with the shortest tall building. Nonetheless, these 11 tallest buildings in Vermont tell a story that's… Read More

By Isaac Peterson 2 hours ago

The 9 Most Expensive Mountain Towns in Wyoming

Fondly called the “Cowboy State,” Wyoming is home to some of the most expensive mountain towns. Amidst awe-inspiring natural beauty, Wyoming offers world-class skiing and outdoor activities like hiking and… Read More

By Devika Khosla 2 hours ago

8 Largest Airports in Hawaii

Welcoming over 9.2 million visitors a year, Hawaii has a special place in the hearts of many travelers. With its lush landscape and beach activities, the true reason that people… Read More

By Micky Moran 2 hours ago

Where Do Woodchuck Live?

Like other members of the Scuiridae squirrel family, woodchucks (Marmota monax) are great climbers. Unlike their squirrely family members, however, woodchucks do not make their homes up in trees. Instead,… Read More

By Laura Dorr 2 hours ago

8 Vegetables to Avoid Growing in Winter

Growing vegetables during winter is easy! There are so many cool-weather greens to choose from. But which vegetables are the worst to grow during the cool season? And are they… Read More

By Nixza Gonzalez 2 hours ago

The 7 Busiest Airports in Louisiana, Ranked

Louisiana has seven major airports, a number that can seem large until you learn that more than 42 million people visited the state in 2022 alone. Louisiana needs multiple gateways… Read More

By Asia Mayfield 3 hours ago

Discover the Top 6 Countries With the Most Pet Cats

If you love cats, you’re certainly not alone. There are an estimated 220 million pet cats in the world as of 2021, and roughly 600 million cats (pets, strays, feral)… Read More

By Jaydee Williams 3 hours ago

3 Mushrooms that Grow in Grass

Mushrooms growing from grass is often a sign of a healthy lawn or meadow. Soils rich in fungi represent a robust, living soil ecosystem. You may notice mushroom growing in… Read More

By Cammi Morgan 3 hours ago

Can Cats Eat Ice Cream? Here’s What You Need to Know

A cat with an upset tummy is not a happy cat. And since you’re the one cleaning the litter box, you face some consequences too. You know what happens when… Read More

By Angie Menjivar 3 hours ago

A Black Bear Chases Family Dog… Until Dad Comes to the Rescue!

Coming face to face with an intruder that could harm your family is never an experience anyone wants to have. However, what happens when that invader is a wild bear?… Read More

By Hannah Crawford 3 hours ago

This Incredibly Agile Lion Leaps Into a Tree to Snatch a Baboon

Taking refuge in a tree is normally a safe bet for baboons when they are being pursued by predators. This baby baboon headed to where they felt safest – the… Read More

By Sharon Parry 3 hours ago

Hamsters Do Not Make Great Pets for Children and Here’s 6 Reasons Why

Many people believe hamsters make excellent first pets for children. Though plenty of animals do make fantastic pets for children, hamsters are not one of them. Children will want a… Read More

By Katie Downey 3 hours ago

The 10 Best Botanical Gardens in New Jersey

New Jersey isn't nicknamed "The Garden State" for nothing. The outstanding agriculture and famous arboretums reflect the state's beauty and boldness. Visit the 10 best botanical gardens in New Jersey… Read More

By Mandy Trotti 3 hours ago

12 Reasons Why Goldfish Are the Best Pets

Who says the best pets are dogs or cats? Goldfish are just as lovable and interesting. Follow along to discover 12 reasons why goldfish are the best pets! Keep in… Read More

By Nixza Gonzalez 4 hours ago

18 Animals That are 100% Monogamous

When you think of a monogamous animal, your mind might immediately go to penguins. It’s been a long-believed myth that all penguins are not only monogamous, but mate for life… Read More

By Katarina Betterton 4 hours ago

Minnesota Airports Ranked: The Ultimate List of Best-to-Worst Places to Fly

The vast majority of people dread going to the airport. While the idea of traveling can be exciting, getting to the airport early, going through TSA, and hoping you make… Read More

By Kirstin Harrington 4 hours ago

Capricorn and Pisces Compatibility: Romance, Friendship, and More

Capricorn and Pisces compatibility is incredibly fascinating, for many reasons. These two signs of the zodiac appear compatible on paper, but reality may say otherwise. How can you learn about… Read More

By August Croft 4 hours ago

See all of A-Z Animals News and Information.

Animal Reference Guides And Educational Resources

We believe if people are more educated about the world’s animals, they will better car for them. That’s why we are building the world’s greatest animal encyclopedia, completely free to you. Please take a moment to learn more about animals today using these helpful guides and resources:

  • Reference Library – See helpful information on conservation, classification, animal evolution, and more
  • Glossary – A list of scientific and technical animal terms, with definitions
  • Animal Habitats – Learn all about different animal habitats
  • Diet – The different animal diets like omnivores, herbivores, and carnivores defined with examples
  • Behavior – Learn all about animal intelligence, communication, community, language, migration, and more.

Animal Encyclopedia With Facts, Pictures, Definitions, and More! FAQs (Frequently Asked Questions) 

What are the 6 types of animals?

The 6 types of animals are mammals, fish, amphibians, reptiles, birds and invertebrates. Additionally, animals are classified in many different ways, which you may learn about in this complete guide to animal classification.

What are the 10 most popular animals?

The 10 most popular animals on AZ Animals are:

  1. Lion
  2. Panther
  3. Amur Leopard
  4. Polar Bear
  5. White Tiger
  6. Wolf
  7. Millipede
  8. Arctic Fox
  9. Marble Fox
  10. Rhinoceros 

How many animals are there?

There are over 1 million known animal species and more than 98% of those are insects, which are indeed animals.