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

Best Grass Seed for Sandy Soil: Top Options and 9 Critical Care Tips

Growing grass in sandy soil isn’t always an easy task. The soil conditions can make it difficult to establish some grass seed varieties. Sandy soil doesn’t retain water and nutrients… Read More

By Sarah Barkley 6 hours ago

Dogo Argentino Prices in 2024: Purchase Cost, Vet Bills, and More!

If you've decided to welcome a Dogo Argentino into your home, this can be a very exciting time. However, for many families, budgeting for it can feel stressful and take… Read More

By Alanna Davis 8 hours ago

What Kind of Dog Is Fang From ‘Harry Potter’? Breed Information, Pictures, and Facts

The tales of Harry Potter have become a global phenomenon, from novels to movies, toys, and even a theme park. The stories follow the young Harry Potter as he goes… Read More

By Kellianne Matthews 9 hours ago

How Smart Are Basset Hounds? Everything We Know About Their Intelligence

Basset hounds are often very misunderstood. They have a reputation for being a bit "slow." However, these dogs are very bright. They may not jump up quickly or take the… Read More

By Kristin Hitchcock 9 hours ago

20 Plants That Repel Pesky Aphids

Let's face it, aphids have been a thorn in the side of gardeners across the globe for decades. These pesky insects can take a toll on a variety of plants… Read More

By Alanna Davis 10 hours ago

What Is Amsterdam Known for? 13 Incredible Things You’ll Find There

Holland is a one-of-a-kind place with adventures of every kind. Amsterdam is a place that everyone should visit at least once in their lives. It is filled with fantastic scenery,… Read More

By Katie Downey 11 hours ago

See 16 Awesome Trees That Start With E

For many, the natural world is one of the most important parts of life. Whether you're someone who loves to immerse themselves in botany and zoology or just someone who's… Read More

By Alanna Davis 11 hours ago

Explore the 21 Amazing 5-Letter Flowers (The Complete List!)

Flowers are one of the most beautiful parts of the natural world. For centuries, humans have been cultivating a variety of blooms for aesthetics, fragrance, medicine, and food. Although roughly… Read More

By Alanna Davis 11 hours ago

25 Fun and Interesting Facts About Hydrangeas

Hydrangeas can be a divisive flower, many people either adore them or dislike them entirely. Despite this, there's no denying that they're some of the most iconic blooms of all.… Read More

By Alanna Davis 12 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 Akita Shepherd
Animals that Start with A

Example: The Akita Shepherd

A Black Widow Spider
Animals that Start with B

Example: The Black Widow Spider

A Chicken Snake
Animals that Start with C

Example: The Chicken Snake

A Dutch Shepherd
Animals that Start with D

Example: The Dutch Shepherd

A Eastern Gray Squirrel
Animals that Start with E

Example: The Eastern Gray Squirrel

A Frogfish
Animals that Start with F

Example: The Frogfish

A Giant Trevally
Animals that Start with G

Example: The Giant Trevally

A Hummingbird Hawk-Moth
Animals that Start with H

Example: The Hummingbird Hawk-Moth

A Indian Cobra
Animals that Start with I

Example: The Indian Cobra

A Javan Rhinoceros
Animals that Start with J

Example: The Javan Rhinoceros

A Komondor
Animals that Start with K

Example: The Komondor

A Longnose Gar
Animals that Start with L

Example: The Longnose Gar

A Magellanic Penguin
Animals that Start with M

Example: The Magellanic Penguin

A Northern Alligator Lizard
Animals that Start with N

Example: The Northern Alligator Lizard

A Oyster Toadfish
Animals that Start with O

Example: The Oyster Toadfish

A Pangolin
Animals that Start with P

Example: The Pangolin

A Queen Snake
Animals that Start with Q

Example: The Queen Snake

A Rhino Beetle
Animals that Start with R

Example: The Rhino Beetle

A Savu Python
Animals that Start with S

Example: The Savu Python

A Toadfish
Animals that Start with T

Example: The Toadfish

A Uinta Ground Squirrel
Animals that Start with U

Example: The Uinta Ground Squirrel

A Vine Snake
Animals that Start with V

Example: The Vine Snake

A Whooping Crane
Animals that Start with W

Example: The Whooping Crane

A Xeme (Sabine’s Gull)
Animals that Start with X

Example: The Xeme (Sabine’s Gull)

A Yorkshire Terrier
Animals that Start with Y

Example: The Yorkshire Terrier

A Zebra Pleco
Animals that Start with Z

Example: The Zebra Pleco

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!

Monterey Pine vs. Bishop Pine Tree: 6 Differences Between These Towering Giants

California's impressive forests are home to a great number of colossal trees including the craggy trunked Monterey Pine and Bishop Pine. Commonly referred to as 'California closed-cone pines,' these pines exhibit… Read More

By Priyanka Paul 12 hours ago

Discover the 7 Biggest Arenas in Utah

If there's one thing that unites people is sports. Watching sports together can really be something very special. Of course, you may get the people who get a little too… Read More

By Patrick MacFarland 12 hours ago

Discover When Hummingbirds Are Set to Emerge in Mississippi (and Where They’ve Been)

Flowers blossoming, insects emerging, and birds returning north are some of the first signs of spring. One of these birds is the beautiful hummingbird, which is seldom seen outside of… Read More

By Alanna Davis 14 hours ago

Discover the Meaning of The Devil Tarot Card

The true meaning of The Devil tarot card may not be what you expect. There are many different possible interpretations of this card, including distinct meanings when The Devil is… Read More

By August Croft 14 hours ago

Learn About the Amazing Waitomo Glowworm Caves in New Zealand

When you hear a name like Waitomo Glowworm Caves, how can you not be interested? It sounds too good to be true, but it's real. The Waitomo caves, at least… Read More

By Nina Phillips 17 hours ago

Beware of Tarantulas in These 13 States

Tarantulas are large arachnids that terrify some people whilst others like to keep them as pets. They are most common in areas such as Mexico, Australia, Southern Asia, and Africa.… Read More

By Sharon Parry 17 hours ago

Are Dogs Allowed At Disney World? 3 Important Rules to Know

So you’ve just booked a vacation at “The Most Magical Place on Earth”, and you’re wondering what to do with Fido. You’ve come to the right place! We’re going to… Read More

By Jaydee Williams 17 hours ago

20 Countries With The Largest Indigenous Populations

Throughout the world, indigenous people have called each country their home and been subjected to a myriad of unfortunate behaviors by the others who live there. This article will explore… Read More

By Katie Downey 18 hours ago

The Top 8 Causes of Limping in Dogs

If your dog is limping, there is a good chance that something is wrong. Dogs don't limp for no reason, just like people don't. However, the exact reason can vary… Read More

By Kristin Hitchcock 18 hours ago

This Year’s Spring Cicada Emergence Set To Be The Largest Since 1803

It's about to be noisy, especially in the Midwest. Two broods of periodical cicadas are preparing to emerge from their slumber simultaneously. And in select areas, they are coming together… Read More

By Gerald Dlubala 18 hours ago

Angry Bison Charges at Woman And Makes Her Trip

There is something so powerful about being around wild animals. Experiencing who they are up close, and even being able to see them face to face or even touch them… Read More

By Hannah Crawford 18 hours ago

The Oldest Church in Hawaii Still Stands Strong After 187 Years

With a complex and interesting history, it's not surprising that the oldest church in Hawaii is an important historic site. Hawaii was populated for centuries by native Hawaiians with their… Read More

By Katie Melynn Wood 19 hours ago

Coton De Tulear Colors

Coton de Tulears are somewhat of a royal breed, rarer than most and well-beloved by breed enthusiasts. They have a long history, with their ancestors likely dating back to the… Read More

By Megan Martin 21 hours ago

Discover the 244 Neighborhoods of Chicago

Chicago is one of the largest cities in the United States, and the city is home to well over 200 neighborhoods. There are 244 neighborhoods and 77 community areas in… Read More

By Em Thomas 21 hours ago

Discover When Hummingbirds Are Set to Emerge in North Carolina

With spring approaching rapidly, you may be wondering when North Carolina will begin to see hummingbirds again. After all, it can be an exciting time, preparing and placing out your… Read More

By Megan Martin 21 hours ago

The 15 Best and Easiest Vegetables to Grow in Texas

Everything sure seems bigger in Texas, including some of the produce. With over 2 million square feet, Texas is second only to Alaska in size in the entire United States.… Read More

By Katie Melynn Wood 21 hours ago

Huge Walrus Brutally Attacks a Dinghy With His Sharp Tusks

For some reason, this walrus is absolutely furious with the rubber dinghy. As the small boat is being hauled out of the water and onto a larger ship, the walrus… Read More

By Sharon Parry 22 hours ago

Top 9 Countries with the Most Amazing and Tallest Waterfalls

There 9 counties with the most amazing and tallest waterfalls. A waterfall itself is a miracle of nature, and a beauty to to behold. Every waterfall is unique in its… Read More

By Jessica Keyes 23 hours ago

The 8 Best States to Visit in March

March is the month the world comes back to life. Greenery begins to sprout, and nature bursts into bloom. With warm days and fresh spring air, it’s the perfect time… Read More

By Em Thomas 23 hours ago

155 Amazing Celebrity Dog Names

Look at that spunky face — your pup’s a star! This diva dog needs a name pulled from the upper echelons of fame. Luckily, we have you covered. From famous… Read More

By Asia Mayfield 1 day 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.