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Discover Different Types of Animals Today

A-Z Animals is the world’s most trusted online animal encyclopedia. If you want cute animals, types of wild animals, exotic pets, weird animals or are looking for comprehensive pet guides for dogs and cats, you’ll find it here!

We believe that if people know more about the world’s creatures they will better care for them. Thats 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.

Latest Animal News, Facts, Rankings, and More!

Discover 9 Plants Invading Texas

Spanning an immense 268,596 miles, Texas is the second largest state in the United States. It has a vast range of ecosystems which is home to many thousands of animals.… Read More

By Hannah Ward 4 hours ago

Discover the Most Dangerous (Deadliest) Animals in Arkansas

Arkansas is home to about 3 million people and covers a number of habitats. In the north of Arkansas sits hills and lakes while the south is warm enough year-round… Read More

By Cindy Rasmussen 8 hours ago

The 10 Biggest Lakes in Maryland

As one of the smallest states in the United States, Maryland has a diverse landscape, ranging from dunes to rolling mountains. It's even known as 'America in Miniature' due to… Read More

By Taiwo Victor 9 hours ago

See all of A-Z Animals News and Information.

The 7 Major Different Types Of Animals

Mammals

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.

Reptiles

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.

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.

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.

Amphibians

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.

Invertebrates

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.

Insects

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.

Pet Guides: Everything To Know About Cat and Dog Breeds

Want to know how to raise a puppy or kitten? Curious to learn more about big and small dog breeds or cat breeds? Check out our comprehensive pets guides below!

Expert Pet Product Reviews

The AZ Animals team has spent years working with and studying the latest research on what products are best for our pets and yours, and we’re excited to share our expert pet product recommendations with you.

The Best Horse Blankets for Staying Warm in Winter

These Are The Ferret Carriers You’ll Actually Want To Use

We Reviewed the Best Parakeet Food in 2022

The 4 Best Poop Bags For Your Dog

The Best Dry Food for Your Kitten – Reviewed

The Top Horse Saddles in 2022

See all of our Expert Pet Product Reviews.

Explore Types of Wild Animals from Around the World

Animals By Letter: Explore A to Z Animal Lists

Animals that Start with A

Example: The Albatross

Animals that Start with B

Example: The Bonobo

Animals that Start with C

Example: The Canadian Horse

Animals that Start with D

Example: The Dormouse

Animals that Start with E

Example: The European Bee-Eater

Animals that Start with F

Example: The Frigatebird

Animals that Start with G

Example: The Gecko

Animals that Start with H

Example: The Havanese

Animals that Start with I

Example: The Indochinese Tiger

Animals that Start with J

Example: The Jackdaw

Animals that Start with K

Example: The Kinder Goat

Animals that Start with L

Example: The Labmaraner

Animals that Start with M

Example: The Mountain Lion

Animals that Start with N

Example: The Night Snake

Animals that Start with O

Example: The Orange-Crowned Warbler

Animals that Start with P

Example: The Pool Frog

Animals that Start with Q

Example: The Quokka

Animals that Start with R

Example: The Ribbon Eel

Animals that Start with S

Example: The Siamese

Animals that Start with T

Example: The Tree Snake

Animals that Start with U

Example: The Ural owl

Animals that Start with V

Example: The Vulture

Animals that Start with W

Example: The Woolly Monkey

Animals that Start with X

Example: The Xerus

Animals that Start with Y

Example: The Yellow Cobra

Animals that Start with Z

Example: The Zebra

See Endangered Animals Lists

Animal Reference Guides

We are building the world’s greatest animal encyclopedia. Be search to check out our Reference Library and Glossary to learn about Animal Habitats, Diet, Behavior and much more…