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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. Also be sure to check out our growing list of Animal Quizzes and Web Stories.

Latest Animal News, Facts, Rankings, and More!

Elk vs Mule Deer: What Are The Differences?

Elk and mule deer are two of the larger members of the deer family across North America. While they both have many similarities, identifying one from the other isn't all… Read More

By Colby Maxwell 42 mins ago


10 Incredible African Wild Dog Facts

Also known as the African painted dog and Cape hunting dog, the African wild dog (Lycaon pictus) is a wild canine native to sub-Saharan Africa. It is the only living… Read More

By Jeremiah Wright 4 hours ago


10 Incredible Cougar Facts

Panther? Mountain lion? Puma? Cougar? They are all the same! The cougar (Felis concolor) is a large cat native to the Americas. Its range spans from northwest Canada to the… Read More

By Jeremiah Wright 4 hours ago

See all of A-Z Animals News and Information.

The 7 Major Different Types Of Animals

Mammals around the world!

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.

Close up of a colorful lizard

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.

Beta fighting fish

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

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

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.

Queen butterfly danaus gilippus on blue hydrangea flowers.

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!

A Irish Setter
Irish Setter

Can live for up to 16 years!

A Boston Terrier
Boston Terrier

Friendly, lovable and very strong!

A Golden Retriever
Golden Retriever

Trusting, kind and gentle!

See a complete list of dog breeds.

A Abyssinian
Abyssinian

The oldest breed of cat in the world!

A Australian Mist
Australian Mist

First bred in the 1700s!

A Ragdoll
Ragdoll

One of the larger breeds of domestic cat!

See a complete list of cat breeds.

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.

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

A Anole Lizard
Animals that Start with A

Example: The Anole Lizard

A Bichpoo
Animals that Start with B

Example: The Bichpoo

A Cactus Moth
Animals that Start with C

Example: The Cactus Moth

A Dragonfly
Animals that Start with D

Example: The Dragonfly

A Freshwater Jellyfish
Animals that Start with F

Example: The Freshwater Jellyfish

A Golden Shepherd
Animals that Start with G

Example: The Golden Shepherd

A Husky Jack
Animals that Start with H

Example: The Husky Jack

A Indian Elephant
Animals that Start with I

Example: The Indian Elephant

A Javanese
Animals that Start with J

Example: The Javanese

A Kerry Blue Terrier
Animals that Start with K

Example: The Kerry Blue Terrier

A Lizard
Animals that Start with L

Example: The Lizard

A Moth
Animals that Start with M

Example: The Moth

A Nebelung
Animals that Start with N

Example: The Nebelung

A Otter
Animals that Start with O

Example: The Otter

A Peacock Spider
Animals that Start with P

Example: The Peacock Spider

A Queen snake
Animals that Start with Q

Example: The Queen snake

A Red-Lipped Batfish
Animals that Start with R

Example: The Red-Lipped Batfish

A Stick Insect
Animals that Start with S

Example: The Stick Insect

A Texas Heeler
Animals that Start with T

Example: The Texas Heeler

A Umbrellabird
Animals that Start with U

Example: The Umbrellabird

A Vaquita
Animals that Start with V

Example: The Vaquita

A West Highland Terrier
Animals that Start with W

Example: The West Highland Terrier

A X-Ray Tetra
Animals that Start with X

Example: The X-Ray Tetra

A Yoranian
Animals that Start with Y

Example: The Yoranian

A Zebra Mussels
Animals that Start with Z

Example: The Zebra Mussels

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 HabitatsDietBehavior and much more…

Even more from A-Z Animals

10 Incredible Gila Monster Facts

Not monsters at all! The Gila monster (Heloderma suspectum) is the largest native lizard in the United States. The Gila monster and its close cousin, the beaded lizard (Heloderma horridum),… Read More

By Jeremiah Wright 4 hours ago


The 10 Smelliest Animals in the World

Key Points It looks like a skunk, but it's much worse. Possibly the stinkiest animal in the world, the striped polecat's butt stink can burn its enemies' eyes and temporarily… Read More

By AZ Animals Staff 5 hours ago


Why Do Cats Chirp?

Have you noticed your cat staring out the window, watching birds, and making weird, unfamiliar sounds? That unfamiliar sound that sounds like your cat's chattering is called chirping. This sound… Read More

By Isaac Balogun 5 hours ago

British Shorthair vs Russian Blue Cat: What Are The Key Differences?

Cats are some of the most loving pets. They’re also very intelligent, highly responsive creatures that have a variety of unique features. Some of these animals may look alike, but… Read More

By Kyle Glatz 5 hours ago


Korat vs Russian Blue Cat: Key Differences Explained

Gray cats are beautiful creatures that have fur that can make them seem blue or even silvery. Although some cat breeds that appear gray may look alike, they usually have… Read More

By Kyle Glatz 6 hours ago


10 Incredible Octopus Facts

Octopuses are fascinating creatures right from how they look to all the stories that revolve around them. There are so many amazing discoveries about the octopus, and many more may… Read More

By Emmanuel Kingsley 8 hours ago

3 Unclaimed Islands from Across the World

Have you ever been so fed up with the rat race that you want to sail away and establish your own country? It’s technically not impossible, but it’s a difficult… Read More

By Kristen Holder 10 hours ago


10 Incredible Sea Lion Facts

Sea lions are the most fascinating creatures that you will find in the sea. They growl, bleat, roar, and bark to mark their territory and signal danger. They are called… Read More

By Jeremiah Wright 10 hours ago


8 Islands in the middle of the Atlantic Ocean

The Atlantic Ocean is the world's second-largest ocean covering about 20% of Earth’s surface and 29% of its water surface with an area of about 41,100,000 square miles. There are… Read More

By Emilio Brown 10 hours ago

10 Incredible Shiba Inu Facts

The Shiba Inu is a small-to-medium hunting breed from Japan. They bear a striking resemblance to other Japanese dog breeds such as Hokkaido and Akita Inu and are often mistaken… Read More

By Jeremiah Wright 10 hours ago


10 Incredible Turkey Facts

The turkey is a giant bird, from the Aves class, native to North America. There are two primary species, namely the common turkey(wild and domesticated ones) and the ocellated turkey.… Read More

By Emmanuel Kingsley 11 hours ago


10 Incredible Bearded Dragon Facts

Bearded dragons are also known as pogona and they are one of the most popular lizard pets around the world. They have a wild yet cute appearance, impressive intelligence, and… Read More

By Emmanuel Kingsley 13 hours ago

Ticks in Wyoming

If you’re planning on any outdoor activities in Wyoming this summer, you might want to learn a little about the ticks in Wyoming. That’s right, even a state that gets… Read More

By Brandi Allred 13 hours ago


The Most Famous Snakes, From the Bible to Harry Potter

Snakes have many different associations for many different people. The biblical story of a cunning serpent who tricked Eve in the Garden of Eden has inspired centuries of allegories and… Read More

By Kellianne Matthews 13 hours ago


10 Incredible Otter Facts

The otter, also known as sea otter in many places, is a mammal with about 13 different species. Known scientifically as the Lutra Canadensis, otters have a presence on virtually… Read More

By Emmanuel Kingsley 14 hours ago

10 Incredible Pug Facts

The pug is a dog breed known for its wrinkly face, short nose, curled tails, and relatively small size. They have a long, affectionate history with humans, including children across… Read More

By Emmanuel Kingsley 14 hours ago


What Would Happen if Mosquitos Went Extinct?

It seems like a pleasant fantasy to wake up one day in a world without mosquitos. No nightly visitors through an open window, nobody crashing your BBQs, and no more… Read More

By Kristen Holder 18 hours ago


10 Incredible Polar Bear Facts

Polar bears are one of the most incredible animals on Earth. They are massive marine animals and have a number of adaptations that allow them to survive in their harsh… Read More

By Jennifer Haase 18 hours ago

What are the best plants for your pet snake’s habitat?

What Are The Best Plants For Your Pet Snake Habitat? Live plants benefit a snake's habitat by giving the vivarium a natural look. They can provide shelter for some arboreal… Read More

By Isaac Balogun 20 hours ago


10 Incredible Slug Facts

The slug is not a species, but a name used to describe hundreds, maybe thousands of species. A slug is any gastropod mollusk that lives on land and has little… Read More

By Jeremiah Wright 20 hours ago