Animals!

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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!

Male vs Female Snapping Turtle: What Are The Differences?

Snapping turtles are some of the largest freshwater reptiles in the United States. These amazing turtles can be found across much of the eastern US and have quite the reputation… Read More

By Colby Maxwell 9 mins ago

Male vs Female Guppy: Key Differences Explained

Guppies - also known as rainbow fish or millionfish - are small freshwater fish native to South America, where they inhabit slow-moving rivers and streams. However, they are also one… Read More

By Hannah Ward 54 mins ago

8 Black Snakes in Texas: One is Venomous!

Snakes are often portrayed as aggressive, but almost all snakes retreat at the sight of humans. They’ll only attack if they’re cornered or surprised. However, if this attack comes from… Read More

By Kristen Holder 2 hours ago

Can Your Dog Eat Papaya? Risks and Benefits

Some dog owners share almost all their meals with their fur friends, and the pups enjoy them. However, you should be choosy with the fruits you feed your pets, considering… Read More

By Cedric Jackson 2 hours ago

10 Incredible Glass Frog Facts

Living high in the trees of South and Central America is one kind of frog unlike any other. And there’s not just one species of glass frog; there are actually… Read More

By Brandi Allred 3 hours ago

Moon Bear vs Sun Bear: What Are the Differences?

Bears are large and dangerous predators that most people expect to encounter in the mountains or the plains of North America. However, what if we told you that two lookalikes… Read More

By Kyle Glatz 3 hours ago

Yes – Dogs Can Eat Bananas! Here’s Why

Bananas are a delicious, healthy treat full of essential vitamins and nutrients. But are they as healthy for dogs as they are for us? The answer to that is yes!… Read More

By Shaunice Lewis 4 hours ago

Watch a Rare Lynx Jump on a Skidder to Say Hello

A lynx is named for the root word leuk, which means "light" or "brightness." A wild lynx in Alberta, Canada used its bright eyes to peer into a skidder that… Read More

By Katie Begley 4 hours ago

Copperhead vs Pine Snake: What Are The Differences?

The copperhead is one of the most famous of all snakes here in the United States. Along with that fame, people often confuse other species with them, often to a… Read More

By Colby Maxwell 5 hours ago

Olive Sea Snake vs Hagfish: What’s the Difference?

Our oceans are home to 99% of the living space on our planet. So it’s no surprise that two of the most interesting creatures on Earth—the olive sea snake and… Read More

By Brandi Allred 6 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.

Low Phosphorus Cat Food for Kidney Disease: Reviewed

Taste of the Wild Puppy Large Breed Reviewed – Pros, Cons, and Recalls

The Top Disposable Litter Boxes for 2022: We Found Them

The Best Cat Food for Indoor Cats: Reviewed and Ranked

Embrace Pet Insurance Guide: Everything You Need to Know

JustFoodForDogs Review: Read Before You Buy

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 Amazon Parrot

Animals that Start with B

Example: The Bombay

Animals that Start with C

Example: The Chinook Salmon

Animals that Start with D

Example: The Dragonfish

Animals that Start with E

Example: The English Shepherd

Animals that Start with F

Example: The False Killer Whale

Animals that Start with G

Example: The Goldfish

Animals that Start with H

Example: The Herring

Animals that Start with I

Example: The Irish Setter

Animals that Start with J

Example: The Japanese Squirrel

Animals that Start with K

Example: The King Crab

Animals that Start with L

Example: The Loach

Animals that Start with M

Example: The Mule

Animals that Start with N

Example: The Nyala

Animals that Start with O

Example: The Olive Baboon

Animals that Start with P

Example: The Pointer

Animals that Start with Q

Example: The Quagga

Animals that Start with R

Example: The Red Spitting Cobra

Animals that Start with S

Example: The Sea Slug

Animals that Start with T

Example: The Tibetan Spaniel

Animals that Start with U

Example: The Uguisu

Animals that Start with V

Example: The Velociraptor

Animals that Start with W

Example: The Water Buffalo

Animals that Start with X

Example: The Xoloitzcuintli

Animals that Start with Y

Example: The Yarara

Animals that Start with Z

Example: The Zebra Snake

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…