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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 and Web Stories.

Discover Your Favorite Animal Today!

Latest from A-Z Animals

What is Horsepower, and How Much Does a Horse Have?

Key Points Horsepower is a unit of measurement for power. It is used for machines, not animals. One horsepower is defined as the amount of power required to lift 550… Read More

By Heather Hall 1 hour ago

Discover 14 Dazzling Birds That Start With W

Introduction Over 10,000 species of birds exist across the globe, and around 1,000 extinct species have been discovered. While most animals on Earth are marine or terrestrial, these creatures of… Read More

By Eliana Riley 1 hour ago

Guinea Pig Prices 2023: Purchase Cost, Supplies, Food, and More!

Owning a guinea pig is like having your very own living, cuddly stuffed animal! These funny, gentle, and forgiving animals make the perfect pets for families who want a low-maintenance… Read More

By Andrew Wood 2 hours ago

Amoxicillin Dosage Chart for Cats: Risks, Side Effects, Dosage, and More

If your cat is suffering from a bacterial infection, your vet might prescribe amoxicillin as a treatment. You may have some questions about amoxicillin, and how this medication may affect… Read More

By Cammi Morgan 3 hours ago

Smallmouth Bass Size Comparison: Just How Big Do They Get?

Key Points: The smallmouth bass is a freshwater member of the Centrarchidae (sunfish) family native to central and eastern North America. It has been introduced to other regions, becoming an… Read More

By Rob Amend 4 hours ago

The Hottest June in Hawaii History Was an Epic Scorcher

When June hits Hawaii, it means summer has arrived, and the masses of tourists come with it. While it is not the hottest month, many visitors believe some of the… Read More

By Chanel Coetzee 4 hours ago

The Longest Tunnel in Oregon Includes a Time Travel Adventure

The longest tunnel in Oregon is technically two tunnels, or bores, that run side by side through the Tualatin mountains, extending light rail service from downtown Portland westward to the… Read More

By Rick Chillot 5 hours ago

Discover 5 of the Oldest Cities in North Dakota

With a population of only 775,000, North Dakota is one of the most unspoiled states in the United States. It's known for farming, mining, and petroleum products and wide-open, big-sky… Read More

By Andrew Wood 5 hours ago

What Kind of Dogs Are Lady and the Tramp? Breed Information, Pictures, and Facts

The 1955 animated film Lady and the Tramp features one of the most famous rom-com scenes of all time. Two characters from different worlds, thrown together by circumstance, find themselves… Read More

By Rick Chillot 5 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 Armored Catfish
Animals that Start with A

Example: The Armored Catfish

A Black Swallowtail Caterpillar
Animals that Start with B

Example: The Black Swallowtail Caterpillar

A Cockapoo
Animals that Start with C

Example: The Cockapoo

A Drum Fish
Animals that Start with D

Example: The Drum Fish

A Eel catfish
Animals that Start with E

Example: The Eel catfish

A Fire Ball Python
Animals that Start with F

Example: The Fire Ball Python

A Grey Mouse Lemur
Animals that Start with G

Example: The Grey Mouse Lemur

A Huskita
Animals that Start with H

Example: The Huskita

A Immortal Jellyfish
Animals that Start with I

Example: The Immortal Jellyfish

A Jabiru
Animals that Start with J

Example: The Jabiru

A Kowari
Animals that Start with K

Example: The Kowari

A Livyatan
Animals that Start with L

Example: The Livyatan

A Mourning Dove
Animals that Start with M

Example: The Mourning Dove

A Naked Mole Rat
Animals that Start with N

Example: The Naked Mole Rat

A Oxpecker
Animals that Start with O

Example: The Oxpecker

A Polish Lowland Sheepdog
Animals that Start with P

Example: The Polish Lowland Sheepdog

A Quetzal
Animals that Start with Q

Example: The Quetzal

A Russel’s Viper
Animals that Start with R

Example: The Russel’s Viper

A Siberian Husky
Animals that Start with S

Example: The Siberian Husky

A Teacup Maltese
Animals that Start with T

Example: The Teacup Maltese

A Uintatherium
Animals that Start with U

Example: The Uintatherium

A Vole
Animals that Start with V

Example: The Vole

A Warbler
Animals that Start with W

Example: The Warbler

A Xenotarsosaurus
Animals that Start with X

Example: The Xenotarsosaurus

A Yellowish Cuckoo Bumblebee (formerly Fernald’s Cuckoo Bumblebee)
Animals that Start with Y

Example: The Yellowish Cuckoo Bumblebee (formerly Fernald’s Cuckoo Bumblebee)

A Zebra
Animals that Start with Z

Example: The Zebra

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!

Healthy Betta Fish vs Unhealthy: 10 Warnings Signs

Bettas or Siamese fighters are small, tropical fish that have been kept as pets for over 100 years. They are usually the first choice of fish for those who want… Read More

By Sarah Psaradelis 5 hours ago

Why Does the Fainting Goat, Well… Faint? Learn More About the Bizarre Behavior

The video below starts with an adorable brown and white checkered goat walking around the little farm he is on with other goats surrounding him. Then all of a sudden,… Read More

By Hannah Crawford 6 hours ago

8 Rare and Beautiful Roses In Minnesota

There are a ton of different rose species and varieties out there. However, very few are native to Minnesota or have been developed in the North Star State. That being… Read More

By Em Casalena 6 hours ago

20 Must-Visit Small Towns in North Carolina

Do you love visiting charming small towns in the US? If so, North Carolina is a haven of quaint villages and small cities. Whether you’re looking to stay somewhere nestled… Read More

By Niccoy Walker 6 hours ago

Discover The Largest Rainbow Trout Ever Caught in South Carolina

Rainbow trout are part of the salmon family and native to the northern Pacific Ocean, from the Americas to Russia. However, today, they occur in several countries, including the United… Read More

By Larissa Smith 7 hours ago

Discover Where ‘Silverado’ Was Filmed: Best Time to Visit, Wildlife, and More!

Silverado (1995) is an award-winning American Western film starring Kevin Kline, Danny Glover, Scott Glenn, Kevin Costner, and Linda Hunt. This exciting movie was released on July 10, 1985, and… Read More

By Nixza Gonzalez 7 hours ago

5 Types of Reverse Bicolor Daffodils

If you'd never heard of a reverse bicolor daffodil until now, you're probably not alone. But it won't be long until more gardeners are talking about these unique spring flowers.… Read More

By Jennifer Haase 7 hours ago

The Most Expensive Beaches in Louisiana to Buy a Second Home

The state of Louisiana has a rich history packed with heritage and culture. However, it also has a spectacular terrain famous for its marshes, deltas, and swamps. Additionally, its longleaf… Read More

By Chanel Coetzee 7 hours ago

6 Stunning Native Roses From New Mexico

When we think of the typical rose, we usually think of hybrids or cultivars that were specifically created for use in bouquets, flower arrangements, rose gardens, etc. Contrary to popular… Read More

By Em Casalena 7 hours ago

Explore 20 Fish That Start with C (Their Common Names)

From the colorful and charismatic clownfish to the eerie and elusive cuttlefish, there are so many different types of fish with common names that start with the letter C! Some,… Read More

By Kyler Matthews 7 hours ago

The Most Snake-infested Lakes in Tennessee

Did you know that in all of Tennessee there are no snakes that have the ability to spend 100% of their time in the water? It seems even snakes need… Read More

By Kathryn Koehler 8 hours ago

Discover the Tallest Tree in Florida – An 84-Foot Behemoth

Florida may not be known much for their trees in the way that states like California are known for their redwoods. That being said, there are some pretty massive trees… Read More

By Em Casalena 8 hours ago

What’s in the Red River and Is Is Safe to Swim In? 

The Red River, specifically the Red River of the South is a massive river that runs through many states. The color red isn't very appealing, especially when swimming. Is the… Read More

By Nixza Gonzalez 8 hours ago

Would You Cuddle a Snake? Meet the 10 Friendliest Snakes in North America

Real talk: even the friendliest snake in North America isn’t going to come slithering when you call its name, or do figure eights around your legs like a cat (they’d… Read More

By Rick Chillot 8 hours ago

October 20 Zodiac: Sign, Personality Traits, Compatibility and More

You’re a Libra if you’re an October 20 zodiac sign! Elegant and fair, Libra season occurs from September 23rd to October 22nd, depending on the year you were born. Whether… Read More

By August Croft 8 hours ago

Discover ‘Bird Island’ with Nearly 1,000,000 Inhabitants

There's a place at the northernmost tip of the Seychelles that's massively popular. It's been visited by — surprise — over one million sea birds! From nesting birds who travel… Read More

By Abby Parks 8 hours ago

Watch a Valiant Lioness Stand Strong Against a Pack of Wild Dogs and Defend Her Cub

As a lioness appears to be facing down a pack of African wild dogs the chaos rises. A tourist group in the Maasai Mara National Reserve filmed the interaction. Onlookers… Read More

By Rachael Monson 9 hours ago

Discover the Color of Saturn: Photos, Explanation, and More!

What color is Saturn? You'd think this question would be a no-brainer. You've been seeing pictures of Saturn and the other planets since you were a kid. You probably know… Read More

By Andrew Wood 9 hours ago

7 Remote Lakes in Ohio to Fish and Swim

Ohio has over 5000 natural and man-made lakes. However, not all are safe for swimming, and many don't allow fishing. But, if you are looking for something more secluded where… Read More

By Larissa Smith 9 hours ago

Discover 8 Gorgeous Castles Found in Pennsylvania

Pennsylvania is a state filled with historical treasures and cultural richness. Framed by nature's finest artistry, it boasts eight castle-like establishments, each with unique charm and an intriguing narrative. These… Read More

By Ashley Day 9 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.