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.

Discover Your Favorite Animal Today!

Latest from A-Z Animals

Discover the 12 Best Places to See Sunsets in the U.S.

The United States is a beautiful country with a lot to explore. Within this country are 50 states, each with its own unique history, culture, and geography. It's hard to compare states… Read More

By Nixza Gonzalez 20 mins ago


15 Incredible Animal Tattoos

Tattoos are becoming more and more popular and common. Many people get animal-related tattoos, but how can you choose just one or two ideas? What animal can you tattoo, and… Read More

By Nixza Gonzalez 1 hour ago


Baby Crow: 6 Pictures and 6 Amazing Facts

The American crow (Corvus brachyrhynchos) is a large, shiny black corvid species native to North America. It is one of the most common and widespread birds across its range, which… Read More

By Deniz Martinez 2 hours ago

Saturn Retrograde 2024: What Is It and What It Means for You This Year

Saturn, the astrological planet of restriction, structure, karmic lessons, and boundaries, goes into retrograde once every 12 months. This retrograde lasts about 4.5 months each time. While all retrogrades are… Read More

By Dayva Segal 3 hours ago


Do Cats and Dogs Get Acne? How Do You Treat It?

Though most people find acne disgusting, it holds a strange fascination for a segment of the population. Dermatologists like Dr. Pimple Popper have become celebrities by posting acne removal videos… Read More

By Drew Wood 4 hours ago


6 Dinosaurs That Were Fierce Enough to Kill a T-Rex

People who grew up studying dinosaurs or just watching Jurassic Park probably know that the Tyrannosaurus rex was a terrifying creature. The average T-rex was about 12 to 14 feet… Read More

By Kyle Glatz 5 hours ago

The 105 Best Game of Thrones Dog Names

It's the show that captures your attention in the same way your dog pulls you into the moment. Sometimes, you just can't look away. And there's nothing wrong with binging… Read More

By Angie Menjivar 6 hours ago


Kentucky’s Largest Landowner Controls a Ridiculous 500,000 Acres

He makes his own bourbon, drives a Ford truck, is a native Kentuckian and farmer's son, and owns hundreds of thousands more private land in the Bluegrass State than anyone… Read More

By Tina Page 7 hours ago


Discover the 5 Biggest Arenas in Michigan

To say Michigan is a sports-loving state is an understatement. Detroit, Michigan's biggest city, is home to four professional sports teams. It was voted “Best City for Sports” by USA… Read More

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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!

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.

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 Arthropleura
Animals that Start with A

Example: The Arthropleura

A Brazilian Treehopper
Animals that Start with B

Example: The Brazilian Treehopper

A Ceratosaurus
Animals that Start with C

Example: The Ceratosaurus

A Danish Swedish Farmdog
Animals that Start with D

Example: The Danish Swedish Farmdog

A Eland
Animals that Start with E

Example: The Eland

A Fin Whale
Animals that Start with F

Example: The Fin Whale

A Guinea Pig
Animals that Start with G

Example: The Guinea Pig

A Hawk Moth Caterpillar
Animals that Start with H

Example: The Hawk Moth Caterpillar

A Immortal Jellyfish
Animals that Start with I

Example: The Immortal Jellyfish

A Junglefowl
Animals that Start with J

Example: The Junglefowl

A Kingklip
Animals that Start with K

Example: The Kingklip

A Long-Haired Rottweiler
Animals that Start with L

Example: The Long-Haired Rottweiler

A Mourning Dove
Animals that Start with M

Example: The Mourning Dove

A Nyala
Animals that Start with N

Example: The Nyala

A Opaleye (Rudderfish)
Animals that Start with O

Example: The Opaleye (Rudderfish)

A Pink Fairy Armadillo
Animals that Start with P

Example: The Pink Fairy Armadillo

A Quoll
Animals that Start with Q

Example: The Quoll

A Rhodesian Ridgeback
Animals that Start with R

Example: The Rhodesian Ridgeback

A Saint Berdoodle
Animals that Start with S

Example: The Saint Berdoodle

A Thresher Shark
Animals that Start with T

Example: The Thresher Shark

A Utonagan
Animals that Start with U

Example: The Utonagan

A Vizsla
Animals that Start with V

Example: The Vizsla

A Whippet
Animals that Start with W

Example: The Whippet

A X-Ray Tetra
Animals that Start with X

Example: The X-Ray Tetra

A Yabby
Animals that Start with Y

Example: The Yabby

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
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
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!

The Largest Landowner in New York Owns an Ridiculous 112,000 Acres

Molpus Woodlands Group owns the largest amount of land in New York. Dick Molpus is the founder and former chairman of this forestry company. In addition to New York, Molpus… Read More

By Micky Moran 8 hours ago


Discover the Filthiest City in Rhode Island

Rhode Island is one of the New England states in the Northeastern region of the United States. It covers a total of 1,214 square miles and is one of the… Read More

By Sharon Parry 8 hours ago


What is a Polydactyl Cat? Explore the Unusual Felines with Extra Toes

Cat enthusiasts have coined a number of adorable terms for describing their feline friends. A common favorite is the apt descriptor “toe beans”. Toes beans are the little squishy paw… Read More

By Kellianne Matthews 8 hours ago

12 Animal Superpowers People Wish They Had

Who wouldn't want to have superpowers? The ability to fly, disappear, breathe underwater, or give a satisfying electric zap to our archenemy would be amazing! These powers and more are… Read More

By Drew Wood 9 hours ago


The Top 10 Nickel-Producing Countries in the World

Nickel has been an essential element on Earth for quite some time, and nickel production plays a major role in global economic success. Due to its hardiness and high melting… Read More

By Sammi Caramela 9 hours ago


States Where Californians Are Moving to the Most

Since the pandemic, California has experienced an array of issues that have convinced many longtime residents to consider moving elsewhere. For one thing, California is one of the most expensive… Read More

By Sammi Caramela 12 hours ago

This Elephant Proves That Strength Wins Over Height Every Time

Who needs to be tall when you are this strong? The elephant in this clip can’t quite reach the leaves at the top of the tree. So, does it give… Read More

By Sharon Parry 12 hours ago


The 14 Most Scenic Hiking Trails in All of Hawaii

If you like to hike, then Hawaii ought to be featured on your bucket list. These incredible islands feature stunning hikes from ancient craters to mighty peaks with epic waterfalls.… Read More

By Rebecca Mathews 12 hours ago


11 Secretly Amazing Places to Retire in Ireland

When you've been working for 30 or 40 years, you start counting down the days till your retirement. but you also start planning for the future. Where are you going… Read More

By Patrick MacFarland 12 hours ago

Does New Jersey Get Earthquakes?

Earthquakes are potent natural disasters that have the power to collapse buildings, tear apart the land, and spawn life-threatening tsunamis. While New Jersey’s national reputation isn’t that great in some… Read More

By Kyle Glatz 12 hours ago


7 Reasons the Stones of Puma Punku Are Among Earth’s Coolest Mysteries

The mystery-laden Puma Punku stones lie ruined in the Bolivian jungle, 45 miles west of La Paz on a pre-Incan Tiwanaku-era archaeological site. Puma Punku means "Door of the Puma," but… Read More

By Rebecca Mathews 12 hours ago


The 6 Highest Bridges in Alabama

Famous for its prominent role in the American civil rights movement, Alabama is no stranger to notable sites. Many of them are worth a visit, including the Edmund Pettus Bridge… Read More

By Katie Melynn Wood 13 hours ago

This Is the Dirtiest City in New York (It’s NOT Manhattan)

New York (New York State) is a mid-Atlantic state in the Northeastern region of the United States. It has an area of 47,126 square miles and is the fourth most… Read More

By Sharon Parry 13 hours ago


The Top 5 Countries That Grow the Most Pineapples in the World

Pineapples are some of the most unique-tasting, delicious fruits that you can get. They’re sweet, juicy, and full of flavor! Did you know that pineapples also contain vitamin C, fiber,… Read More

By Jaydee Williams 13 hours ago


What Is Cryptozoology?

Dr. Carl Sagan once stated that the absence of evidence does not mean that evidence is absent. Thought processes like this give hope to people seeking to find things that… Read More

By Kristen Holder 14 hours ago

The Largest Military Base in North Carolina Is a Sprawling 172,000 Acres

The United States has a very large and powerful military. The nation needs large bases to train, house, and support its active service military members and their families. Surprisingly, one… Read More

By Kyle Glatz 15 hours ago


327 Amazing and Clever Pokemon Dog Names

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By Megan Martin 15 hours ago


What is Rhode Island Known For? 8 Things Rhode Islanders Love About Themselves

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By Jennifer Magid 15 hours ago

Even Squirrels Like Ice Cream

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By Hannah Crawford 17 hours ago


This Beautiful U.S. Town Is Known as the `Cherry Capital of the World`

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By Erica Scassellati 17 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.