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

Alien vs. Predator: 10 Real-Life Animals Most Like These SciFi Villains

Two of the most terrifying alien species ever to menace the big screen came together to do battle in the Alien vs. Predator franchise, using every horrific otherworldly ability at… Read More

By Drew Wood 3 hours ago


Clindamycin Dosage Chart for Dogs: Risks, Side Effects, Dosage, and More

Did your veterinarian just prescribe Clindamycin to your dog due to infection? Because you deserve to understand your pet's medication, we discuss Clindamycin uses, doses, and side effects! Let's discuss… Read More

By Amber LaRock 5 hours ago


The 5 Best Tank Mates for Betta Fish (5 and 10 Gallon Tanks)

Betta fish, or Siamese fighting fish, are very popular aquatic pets. These fish come in a wide variety of colors and typically have beautiful, colorful dorsal and caudal fins. Although… Read More

By Jesse Elop 8 hours ago

Can Zebras Be Domesticated?

Zebras pretty much look like stripy horses, so why don't people ride them? British colonial authorities were seriously interested in this question because zebras were already adapted to the African… Read More

By Drew Wood 9 hours ago


Top 10 Most Romantic Animals In The World

What are the most romantic animals? To answer that, we may think of animals that mate for life, but animals in love go beyond that. It seems that some wild… Read More

By Dana Mayor 10 hours ago


Acepromazine Dosage Chart for Dogs: Risks, Side Effects, Dosage, and More

Has your veterinarian prescribed acepromazine for your stressed out pup? You likely have questions about this medication and how it works, so let's break down everything you need to know… Read More

By Amber LaRock 11 hours ago

The Gargantuan Beach as Long as 2,640 Football Fields

Summer is almost upon us. When the weather starts getting nicer and when you realize you don't need a jacket to walk around anymore, it means that it's beach season.… Read More

By Patrick MacFarland 13 hours ago


Panacur Dosage Chart for Dogs: Risks, Side Effects, Dosage, and More

Has your veterinarian prescribed Panacur to your dog with intestinal parasites? You likely have questions about this deworming medication and how it works, so let’s break down everything you need to know about Panacur… Read More

By Amber LaRock 13 hours ago


Long-Haired German Shepherd Vs. Short-Haired: 3 Differences Explained

You might think the only difference between a long-haired German shepherd vs. short-haired German shepherd is their hair length, which makes sense given their names. And we’ll be honest, you… Read More

By Niccoy Walker 15 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!

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 Alaskan Klee Kai
Animals that Start with A

Example: The Alaskan Klee Kai

A Bornean Orangutan
Animals that Start with B

Example: The Bornean Orangutan

A Corgidor
Animals that Start with C

Example: The Corgidor

A Dunkleosteus
Animals that Start with D

Example: The Dunkleosteus

A European Goldfinch
Animals that Start with E

Example: The European Goldfinch

A Fruit Fly
Animals that Start with F

Example: The Fruit Fly

A Gordon Setter
Animals that Start with G

Example: The Gordon Setter

A Hallucigenia
Animals that Start with H

Example: The Hallucigenia

A Insects
Animals that Start with I

Example: The Insects

A Jamaican Boa
Animals that Start with J

Example: The Jamaican Boa

A Kudu
Animals that Start with K

Example: The Kudu

A Least Flycatcher
Animals that Start with L

Example: The Least Flycatcher

A Miniature Bull Terrier
Animals that Start with M

Example: The Miniature Bull Terrier

A Norrbottenspets
Animals that Start with N

Example: The Norrbottenspets

A Pike Fish
Animals that Start with P

Example: The Pike Fish

A Quoll
Animals that Start with Q

Example: The Quoll

A Red-Bellied Black Snake
Animals that Start with R

Example: The Red-Bellied Black Snake

A Stargazer Fish
Animals that Start with S

Example: The Stargazer Fish

A Tylosaurus
Animals that Start with T

Example: The Tylosaurus

A Underwing Moth
Animals that Start with U

Example: The Underwing Moth

A Veery
Animals that Start with V

Example: The Veery

A Wirehaired Pointing Griffon
Animals that Start with W

Example: The Wirehaired Pointing Griffon

A Xiphactinus
Animals that Start with X

Example: The Xiphactinus

A Yellow Spotted Lizard
Animals that Start with Y

Example: The Yellow Spotted Lizard

A Zonkey
Animals that Start with Z

Example: The Zonkey

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 Boston Terrier
Boston Terrier

Friendly, lovable and very strong!

A Irish Setter
Irish Setter

Has a beautiful coat that's flowing and feathered!

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!

5 Absurdly Strong Animals More Powerful Than A Silverback

Males of the Mountain gorilla species that have reached maturity are called silverbacks. The strength-to-weight ratio of Silverback gorillas is among the highest of any living animal. You would think… Read More

By Jennifer Gaeng 22 hours ago


The 15 Greatest Songbirds Found in America

America may be the land of the free and the home of the brave, but it is also home to many gorgeous animals. Whether you spot animals on land or… Read More

By Patrick MacFarland 22 hours ago


“Brodie That Dood” – The Adventures of the Internet’s Favorite, Funniest Dog

Goldendoodles are one of the most popular dog breeds in the United States today. And arguably the most popular of all goldendoodles is Brodie That Dood, who has become a… Read More

By Drew Wood 22 hours ago

Hellhounds and the Hound of Heaven: Meaning and Symbolism

Elvis famously sang, "You ain't nothing but a hound dog," as if that was an insignificant thing. It's not insignificant if you're tracking something—or being tracked—though. The magnificently sensitive nose… Read More

By Drew Wood 22 hours ago


English Pointer Progression: Growth Chart, Milestones, and Training Tips

English pointers, otherwise known simply as pointers, are often thought of as the ultimate sporting dog. They combine power with grace and carry themselves with regal poise! They also make… Read More

By Sharon Parry 22 hours ago


Discover the Largest Great White Ever Found Off Georgia’s Coast

Summer and spring are incredible periods to lay back on Georgia’s beaches and swim the Atlantic Ocean's coastlines southeast of the American State. The coastlines have a diverse ecosystem that… Read More

By Emmanuel Kingsley 22 hours ago

Norwegian Elkhound Progression: Growth Chart, Milestones, and Training Tips

Norwegian Elkhounds are members of the American Kennel Club Hound Group of dog breeds. They are also one of the ‘spitz’ type of dogs which means that they have pricked… Read More

By Sharon Parry 22 hours ago


Why Are Quokkas So Darn Friendly and Photogenic?

If you've never heard of a quokka, you've been missing out! These little critters would win any animal popularity contest hands-down. They would even give puppies a run for their… Read More

By Drew Wood 22 hours ago


Can You Take Your Pet to Hawaii? Your Guide to the State’s Strict Guidelines

Pets are like members of our family, so it's understandable that a lot of pet parents don't want to leave their little buddies behind when they travel. You'll want to… Read More

By Drew Wood 22 hours ago

Military Dolphins: What Jobs Do They Perform in the U.S. Navy?

Animals have been loyal helpers to people in every area of life: companions, workers, rescuers, guides, guardians, and medical support. They have also been co-opted into one of humans' most… Read More

By Drew Wood 23 hours ago


The Super Old State Fair That’s Been Going Strong for 208 Years

When summer arrives, it says if the entire world decides to be on vacation. There are so many summer traditions that have been memorialized in American states throughout the country.… Read More

By Patrick MacFarland 23 hours ago


Avoid Putting These 7 Kinds of Common Household Waste in Compost

Composting household waste is not only an environmentally responsible thing to do, it can also be fun. It's especially rewarding for gardeners to see what would have been garbage converted… Read More

By Drew Wood 1 day ago

Discover 6 Smells That Spiders Absolutely Hate

Not many people desire to have spiders lurking around their homes. If you’ve found one (or more) of these eight-legged critters crawling around your house, you’ve probably wondered how you… Read More

By Kirstin Harrington 1 day ago


Discover 9 Black Spiders in California

Spiders typically elicit strong responses in humans, with many of us running the opposite direction when a spider is spotted. Mention of these arachnids often brings to mind scary-looking images… Read More

By Angie Menjivar 1 day ago


11 Incredible Purple Snakes You Never Knew Existed

Snakes are among the most beautiful animals in the world. Ironically, they are also among the most dangerous, as a dose of venom from some snakes can kill an adult… Read More

By Emmanuel Kingsley 2 days ago

Huntsman Spider vs Wolf Spider: What Are 6 Key Differences?

It is said that the huntsman spider is the most eerie-looking of all the Australian spiders. It may be found all over Australia. It is also the largest spider species… Read More

By Jennifer Gaeng 2 days ago


The 21 Best Tank Mates For Dwarf Gourami

As any fish enthusiast will tell you, it's important to be mindful when bringing together different types of fish. Making the wrong choices can lead to serious issues. Generally, dwarf… Read More

By Heather Hall 2 days ago


Black Widow vs. Brown Recluse: Which Deadly Spider Would Win in a Fight?

Are you ready for the ultimate spider showdown? It's black widow vs. brown recluse – two of the most dangerous spiders on the Earth. Which one would win in a… Read More

By Lev Baker 2 days ago

11 Endangered Dog Breeds

When you consider endangered animal populations, you probably think of habitat loss. Sometimes, hunting is the issue. Pollution could also gravely affect wild animal populations. But with domesticated dogs, the… Read More

By Angie Menjivar 2 days ago


Where Do Spiders Go In The Winter?

Cold temperatures and harsh weather conditions are bad news for most animals, including spiders. But these creatures aren't entirely helpless when faced with frigid temperatures. They have a few tricks… Read More

By Alan Lemus 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.

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.