Animals!

Discover cute, wild, and weird animals using the search bar below, or scroll to see popular animal lists!

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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.

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 American Cockroach
Animals that Start with A

Example: The American Cockroach

A Burmese
Animals that Start with B

Example: The Burmese

A Caracal
Animals that Start with C

Example: The Caracal

A Dugong
Animals that Start with D

Example: The Dugong

A Edible Frog
Animals that Start with E

Example: The Edible Frog

A Feist
Animals that Start with F

Example: The Feist

A Greenland Dog
Animals that Start with G

Example: The Greenland Dog

A Humpback Whale
Animals that Start with H

Example: The Humpback Whale

A Ibizan Hound
Animals that Start with I

Example: The Ibizan Hound

A Javan Rhinoceros
Animals that Start with J

Example: The Javan Rhinoceros

A Kangal
Animals that Start with K

Example: The Kangal

A Long-Eared Owl
Animals that Start with L

Example: The Long-Eared Owl

A Mexican Alligator Lizard
Animals that Start with M

Example: The Mexican Alligator Lizard

A Norwegian Elkhound
Animals that Start with N

Example: The Norwegian Elkhound

A Ocelot
Animals that Start with O

Example: The Ocelot

A Peekapoo
Animals that Start with P

Example: The Peekapoo

A Quail
Animals that Start with Q

Example: The Quail

A Raggle
Animals that Start with R

Example: The Raggle

A Sumatran Tiger
Animals that Start with S

Example: The Sumatran Tiger

A Tapanuli Orang-utan
Animals that Start with T

Example: The Tapanuli Orang-utan

A Uakari
Animals that Start with U

Example: The Uakari

A Vaquita
Animals that Start with V

Example: The Vaquita

A Woolly Monkey
Animals that Start with W

Example: The Woolly Monkey

A Xoloitzcuintli
Animals that Start with X

Example: The Xoloitzcuintli

A Yellow Sac Spider
Animals that Start with Y

Example: The Yellow Sac Spider

A Zebra Finch
Animals that Start with Z

Example: The Zebra Finch

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…

Animals – Facts, Pictures and Resources 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.