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 and Web Stories.

Discover Your Favorite Animal Today!

Latest from A-Z Animals

19 Countries With the Most Freshwater Resources

Freshwater is found in lakes, rivers, swamps, groundwater, icecaps, and glaciers. Freshwater is pure water with low concentrations of natural salts and most of the world's freshwater is locked in… Read More

By Niccoy Walker 15 mins ago

30 Birds with White Heads and How to Identify Each Kind

Are you an avid bird watcher wanting to know how to identify more birds? Or maybe you love seeing the flying creatures in your daily life and want to know… Read More

By Zoe Carina 2 hours ago

13 Cheapest Horses to Keep as Pets

So, you're looking to bring a horse into your life? If you're not careful or well researched, you could end up spending a fortune on a steed. And that animal… Read More

By Zoe Carina 2 hours ago

Yes, Ferrets Can Swim but Take These 9 Precautions

Domestic ferrets are strong and agile swimmers just like their wild cousin, the European polecat. Many of these friendly and curious pets enjoy playing and splashing around in the water.… Read More

By Rachael Monson 2 hours ago

Moon in Pisces: Personality Traits, Compatibility, and Meaning

Are you a Moon in Pisces individual curious to learn more about this birth chart placement? In astrology, the Moon gives us insight into our instinctive and emotional natures. Our… Read More

By Volia Schubiger 2 hours ago

Animal Eye Colors: Discover the Rarest to Most Common

Rare animal eye colors fascinate scientists and nature lovers worldwide. Nearly every animal species on the planet possesses a colored iris surrounding the pupil within the eye. The iris (colored… Read More

By Rachael Monson 3 hours ago

How to Tell if a Bug Is in Your Ear and How to Get It Out

You'd think it'd be pretty obvious if there is a bug in your ear, but you may not initially notice. There are certain tell-tale symptoms that help you determine whether… Read More

By Angie Menjivar 4 hours ago

What Animal is Chowder?

Are you a fan of cartoons? If yes, then you may remember the show 'Chowder' that ran from 2007 to 2010 on Cartoon Network. Have you ever wondered which animals… Read More

By Nixza Gonzalez 5 hours ago

Sagittarius Birthstones: Meaning, Properties, and Uses

They can be a bit hasty with their words and impulsive with their actions, but their naturally enthusiastic and adventurous nature is intoxicating. With such a beautifully complex personality, you… Read More

By Angie Menjivar 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 Assassin Bug
Animals that Start with A

Example: The Assassin Bug

A Blue Eyed Pleco
Animals that Start with B

Example: The Blue Eyed Pleco

A Coastal Taipan
Animals that Start with C

Example: The Coastal Taipan

A Dorking Chicken
Animals that Start with D

Example: The Dorking Chicken

A East Siberian Laika
Animals that Start with E

Example: The East Siberian Laika

A Fairy-Wren
Animals that Start with F

Example: The Fairy-Wren

A Golden Pyrenees
Animals that Start with G

Example: The Golden Pyrenees

A Horsefly
Animals that Start with H

Example: The Horsefly

A Icadyptes
Animals that Start with I

Example: The Icadyptes

A Josephoartigasia monesi
Animals that Start with J

Example: The Josephoartigasia monesi

A Kinder Goat
Animals that Start with K

Example: The Kinder Goat

A Luna Moth Caterpillar
Animals that Start with L

Example: The Luna Moth Caterpillar

A Maltese
Animals that Start with M

Example: The Maltese

A Naegleria
Animals that Start with N

Example: The Naegleria

A Ostrich
Animals that Start with O

Example: The Ostrich

A Puss Caterpillar
Animals that Start with P

Example: The Puss Caterpillar

A Quagga
Animals that Start with Q

Example: The Quagga

A Raccoon Dog
Animals that Start with R

Example: The Raccoon Dog

A Swedish Lapphund
Animals that Start with S

Example: The Swedish Lapphund

A Turnspit
Animals that Start with T

Example: The Turnspit

A Ulysses Butterfly
Animals that Start with U

Example: The Ulysses Butterfly

A Vulture
Animals that Start with V

Example: The Vulture

A Wood Bison
Animals that Start with W

Example: The Wood Bison

A Xoloitzcuintli
Animals that Start with X

Example: The Xoloitzcuintli

A Yellow Crazy Ant
Animals that Start with Y

Example: The Yellow Crazy Ant

A Zuchon
Animals that Start with Z

Example: The Zuchon

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!

Douglas Fir vs. Sitka Spruce Tree: 7 Differences Between These Towering Giants

Trees are an essential part of any climate. They provide oxygen while preserving soil and promoting cleaner air. However, the benefits that they offer go beyond their presence in nature.… Read More

By Micky Moran 6 hours ago

Sun Sextile Aspects For Each Planet in the Natal Zodiac Chart

The Sun is one of the most important aspects of a natal astrology chart. It represents your overall personality, ego, what drives you, and where you shine. What the sun… Read More

By Dayva Segal 7 hours ago

8 Animals That Eat Poop (and How They Do It Without Getting Sick)

You know how important it is to maintain a well-balanced diet that incorporates the nutrients your body needs for survival. Animals know this instinctively. Instead of meal planning and counting… Read More

By Angie Menjivar 7 hours ago

The 10 Most Common Causes of Death of Betta Fish

Betta fish are common household pets with unique and bright coloring. This freshwater fish, also called Siamese fighting fish, requires unique and delicate care. However, they’re also known to be… Read More

By Sammi Caramela 9 hours ago

The Largest Banana Bunch Ever Grown Could Feed an Entire Village

Mankind has made it their mission to grow impossibly large fruits and vegetables for decades. The world's largest mango weighed in at a whopping 9.36 pounds back in 2020. Shortly… Read More

By Alanna Davis 9 hours ago

Is Diatomaceous Earth Safe for Dogs? 4 Important Things to Know Before Using It

Diatomaceous Earth isn't something everyone is familiar with when thinking about their pets. It can, however, be used for numerous tasks and can even help with insects like fleas. The… Read More

By Katie Downey 10 hours ago

Why is Tokyo Called The Big Mikan? (Plus Other Names The City Could Go By)

Oftentimes, nicknames are a way to identify a person, place, or thing. Nicknames can be a colloquial term that is often more personal. When it comes to cities, the nickname,… Read More

By Patrick MacFarland 10 hours ago

Holland Chicken: Origin, Characteristics, Price, and More!

Perhaps the rarest chicken breed in America is the Holland chicken. This meaty, hardy breed is known for being affable and friendly toward humans, making it a treasured backyard pet.… Read More

By Kathryn Dueck 10 hours ago

The Largest Borough in New York City Now and in 30 Years

The largest borough in New York is Brooklyn. That is if you’re talking about population. If you’re talking about geographical distance, then the largest borough in New York is Queens.… Read More

By Samuel Christopher 11 hours ago

Leo and Sagittarius Compatibility: Romance, Friendship, and More

There are many things to consider when contemplating Leo and Sagittarius compatibility. These two signs of the zodiac share a compatible element and align well on many different things. But… Read More

By August Croft 11 hours ago

What is Cooperative Care and How to Begin With Your Pet

If you care for a pet, you may know all too well the struggle of keeping your pet calm and still while administering eye drops, clipping nails, cleaning ears, changing… Read More

By Cammi Morgan 11 hours ago

Cancer and Aquarius Compatibility: Romance, Friendship, and More

There are many reasons why you may be seeking answers regarding Cancer and Aquarius compatibility. While these two zodiac signs seem to have very little in common astrologically, their similarities… Read More

By August Croft 11 hours ago

Training Your Shih Tzu: Best Tips, Common Mistakes, and More!

Are you the proud owner of a spunky little Shih Tzu? This breed is famous for its curiosity and loving personality. However, when it comes to training them, the process… Read More

By Alanna Davis 11 hours ago

Shimeji Mushrooms: A Complete Guide

Mushrooms and other fungi make up a large part of our world. Of the 14,000 species of documented mushrooms, only about 5% of them are considered “choice edible” varieties. One… Read More

By Carlee Parsley 11 hours ago

Libra Birthstones: Meaning, Properties, and Uses

What do Libras love? Libras are lively individuals with a great appreciation for art. Whether they’re watching a play, visiting an art festival, or touring a museum; Libras love seeing… Read More

By Crystal 11 hours ago

Are Vizslas Good Family Dogs? 5 Reasons to Consider this Breed

Vizslas are not bred as companion dogs. Instead, they're versatile gundogs. However, they can still make great family dogs for the right situation. They're good-natured and tend to bond closely… Read More

By Kristin Hitchcock 11 hours ago

These Are the 10 Snowiest Countries in the World

Snowfall can make you feel like you’re in a winter wonderland. While some places may never get a glimpse of fragile snowflakes, other regions see jaw-dropping amounts of snowfall. With… Read More

By Kirstin Harrington 11 hours ago

10 Towns With the Cheapest Gas in British Columbia

Fairmont Natural Hot Springs (Fairmont, British Columbia, Canada) British Columbia is a beautiful area in Canada to drive through. One of the main attractions in British Columbia is the Canadian… Read More

By Justin Sexton 12 hours ago

North Carolina’s Population Has Grown 105% in 50 Years… 7 Reasons People Love the Tarheel State

North Carolina is a state famous for its college basketball, its past contributions to the tobacco industry, their Outer Banks beach, and its nature. The Tarheel state has grown exponentially… Read More

By Justin Sexton 12 hours ago

Swimmer Takes Underwater Selfie With Giant Monster From the Deep

In this day and age, taking a picture is as easy as whipping your phone out of your pocket and snapping some great shots. Well, why should it be any… Read More

By Hannah Crawford 12 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.