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

The 620 Best and Most Fitting Betta Fish Names

Betta fish, also known as Siamese fighting fish, are a popular choice for those who want an active and beautiful pet fish. They're also a great starter fish for children.… Read More

By Mandy Trotti 9 hours ago

7 Solutions that Kill Bamboo Permanently

Bamboo is a hardy, perennial grass that many people use as an ornamental plant. Its unique beauty and tall height make it a popular choice for adding privacy to backyards… Read More

By E. E. Gonzalez 12 hours ago

Maine’s Top 5 Most Valuable Crops

Although some people might think Maine is limited when it comes to farming due to its position far north, that couldn't be further from the truth. In fact. Maine is… Read More

By Alanna Davis 14 hours ago

The 8 Most Beautiful College Campuses in Mississippi Will Leave You Speechless

In their quest to attract and retain students, colleges and universities everywhere inject love, care, and money into their landscaping. Any stunning natural elements to a campus work wonders on… Read More

By Carlee Parsley 14 hours ago

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

Even people who do not follow astrology closely have heard of "Mercury retrograde," the period of time when the planet Mercury appears to move backward and causes technology and communication… Read More

By Dayva Segal 16 hours ago

The Oldest Church in Virginia Is an Amazing 337 Years Old

Virginia’s tidewater region is home to some of the oldest cities in the state. With settlements that date to the early 1600s, Virginia’s coastal cities feature a rich tapestry of… Read More

By Joyce Nash 16 hours ago

500 Funny and Sweet Nicknames People Call Their Dogs

Did you know that dogs can understand over 100 words? Researchers estimate they can learn as many as 165 words, and one of the words they grasp best is their… Read More

By Crystal 16 hours ago

The 11 Biggest Rodents on the Planet

While most rodents are small (and some members of the Rodentia family are very small), not all of them are little. Although the rats in New York City are famed… Read More

By Laura Dorr 18 hours ago

29 Sounds Pigs Make and What Each Means (It’s Not Just Oink!)

Curious about what pigs are saying? Archaeological finds suggest that humans began domesticating pigs around 9,000 years ago in the Middle East. There are over 15 species recognized worldwide, and… Read More

By Crystal 19 hours ago

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!


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


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 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, 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


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.


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.


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 Arabian Wolf
Animals that Start with A

Example: The Arabian Wolf

A Bed Bugs
Animals that Start with B

Example: The Bed Bugs

A Croatian Sheepdog
Animals that Start with C

Example: The Croatian Sheepdog

A Deinosuchus
Animals that Start with D

Example: The Deinosuchus

A Eelpout
Animals that Start with E

Example: The Eelpout

A Fur Seal
Animals that Start with F

Example: The Fur Seal

A Giant Desert Centipede
Animals that Start with G

Example: The Giant Desert Centipede

A Honey Bee
Animals that Start with H

Example: The Honey Bee

A Irish Setter
Animals that Start with I

Example: The Irish Setter

A Jungle Carpet Python
Animals that Start with J

Example: The Jungle Carpet Python

A King Shepherd
Animals that Start with K

Example: The King Shepherd

A Lumpfish
Animals that Start with L

Example: The Lumpfish

A Marine Iguana
Animals that Start with M

Example: The Marine Iguana

A Northern Flicker
Animals that Start with N

Example: The Northern Flicker

A Oviraptor
Animals that Start with O

Example: The Oviraptor

A Pachycephalosaurus
Animals that Start with P

Example: The Pachycephalosaurus

A Quahog Clam
Animals that Start with Q

Example: The Quahog Clam

A Redbone Coonhound
Animals that Start with R

Example: The Redbone Coonhound

A Savannah Sparrow
Animals that Start with S

Example: The Savannah Sparrow

A Tree Snake
Animals that Start with T

Example: The Tree Snake

A Urutu Snake
Animals that Start with U

Example: The Urutu Snake

A Valley Bulldog
Animals that Start with V

Example: The Valley Bulldog

A White-Faced Capuchin
Animals that Start with W

Example: The White-Faced Capuchin

A Xiphactinus
Animals that Start with X

Example: The Xiphactinus

A Yellow Perch
Animals that Start with Y

Example: The Yellow Perch

A Zebra Snake
Animals that Start with Z

Example: The Zebra Snake

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

One of the oldest cat breeds in the world!

A Australian Mist
Australian Mist

The only cat breed to originate in Australia.

A 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!

10 Things You Didn’t Know About Capuchin Monkeys

When you think of a monkey, you probably visualize the capuchin. The capuchin monkey is a well-known primate, often kept as pets and featured in films. However, there is much… Read More

By Laura Dorr 19 hours ago

16 Must-Visit Small Towns in Delaware

The United States is a diverse country with big cities and small towns. The big cities are gigantic and filled with tall buildings. The small towns, however, are tiny and… Read More

By Patrick MacFarland 19 hours ago

What Is Equine Therapy? The Special Connection Between Horses and Healing

The connection between horses and humans is ancient, going back at least 6,000 years. Initially, it was a practical relationship: horses provided transportation, assisted with heavy loads, and offered an… Read More

By Kellianne Matthews 20 hours ago

The Highest Bridge in British Columbia Will Give You Vertigo

There are bridges all over the world, some are big and some are small. Some bridges are long and others are short. Some bridges are extremely high and can be… Read More

By Patrick MacFarland 20 hours ago

Poison or Venom? What’s the Difference and Animals That Have Each

In the world of animals, there is a wide variety. Some are cute and cuddly, while others can be dangerous. When encountering dangerous animals people often imagine huge teeth and… Read More

By Stephanie Heath 21 hours ago

5 Cheapest Crabs To Keep as Pets

If you've been thinking about getting into the hobby of keeping crabs, don't let the price deter you. Despite what you might think, many pet crabs are low-maintenance and cheap!… Read More

By Alanna Davis 22 hours ago

The Largest City in Nebraska Now and in 2050

The Cornhusker State, Nebraska is a Midwestern state. It is the 16th largest state in the United States based on land area. In regard to population, it is the 37th… Read More

By Megan Martin 22 hours ago

A Groundhog Steals This Man’s Afternoon Snack

There are few things more adorable in life than when an animal comes over to you to show love when you didn’t ask for it. Perhaps you had a bad… Read More

By Hannah Crawford 22 hours ago

The 8 Most Beautiful College Campuses in Wisconsin Are Picturesque Masterpieces

College campuses in the United States and all over the world are kind of like little, mini-cities.  University campuses have everything for students, from a doctor's office to restaurants to… Read More

By Patrick MacFarland 22 hours ago

Do Deer Make Good Pets?

Many animals in the order Artiodactyla are kept as livestock or pets, including goats, sheep, and cows. While deer share the order with these animals, you don’t usually find them… Read More

By Laura Dorr 23 hours ago

Discover When Hummingbirds Will Return to Arizona

Hummingbirds are beautiful creatures. But like all birds, they migrate from place to place. These migratory patterns usually coincide with the weather. When it comes to Arizona, hummingbirds tend to… Read More

By Patrick MacFarland 23 hours ago

Grooming your English Springer Spaniel: 6 Steps

English Springer Spaniels are known for their beautiful, flowing coats. However, keeping them tangle-free and healthy requires consistent grooming. Otherwise, the mats can quickly become overwhelming. Luckily, the required grooming… Read More

By Kristin Hitchcock 24 hours ago

Killer Whale Takes Out a Dolphin With a Power Slam to the Neck

Captured off the coast of San Diego, this astonishing clip captures the moment that a dolphin is punched on the chin by a killer whale! The dolphin rises above the… Read More

By Sharon Parry 1 day ago

The 6 States That Produce the Most Maple Syrup

Extracted from sugar maple trees, maple syrup has a distinct sweetness reminiscent of toffee and caramel. It's often incorporated into breakfast foods like waffles and pancakes but its a versatile… Read More

By Angie Menjivar 1 day ago

The 6 Cities in South Carolina with the Most Expensive Gas Prices

The Palmetto State offers slow living, access to stunning white sand beaches, and a rich culture throughout. Some cities are ultra-walkable, letting you enjoy downtown areas without having to worry… Read More

By Angie Menjivar 2 days ago

Discover the Highest Point in the Sahara Desert

Although some people might imagine deserts as barren and desolate, you might be surprised to learn that the Sahara is anything but. Located in Africa, this region is home to… Read More

By Alanna Davis 2 days ago

What Is Switzerland Known for? 10 Things the Swiss Love About Themselves

Overflowing with crystal-clear alpine lakes, enormous snow-capped mountains, and romantic medieval castles, Switzerland seems like the setting for a paradisical dream. Yet, beyond its breathtaking scenery, the country also serves… Read More

By Kellianne Matthews 2 days ago

The 8 Best Perennial Flowers to Plant in Southern California

There are several things we know about Southern California: its amazing beaches, sunny weather year-round, and the celebrities that hang around the cool spots in LA. We also know that… Read More

By Patrick MacFarland 2 days ago

Discover How Long Hummingbirds Can Go Without Food

Some of you might be familiar with the "rule of three" in human beings. Typically, we can go three minutes without oxygen, three days without water, and three weeks without… Read More

By Alanna Davis 2 days ago

Beware of These 5 Pitfalls That Come With Retiring in Thailand

Thailand has a reputation for being a great place for retirees. Its warm weather, delicious cuisine, beautiful scenery, and rich culture are all factors that play into the decision for… Read More

By Sofia Fantauzzo 2 days 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.