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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.
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Latest from A-Z Animals
The 6 Fast-Growing Counties in New Mexico Are Exploding in Growth
New Mexico is a state in the Southwest with beautiful landscapes and unique cultures. According to the U.S. Census Bureau, the population in the state is dropping. In 2020, New… Read More
By Kyle Glatz 21 seconds ago
Discover When Leaves Change Color in Wisconsin (Plus 5 Places with Beautiful Foliage)
Autumn's colorful foliage in Wisconsin conveys stunning vistas to individuals who adore fall or merely want to take it easy and appreciate nature. Colors range from fiery red, rusty orange,… Read More
By Kirstin Harrington 18 mins ago
Discover 6 Tips to Get Rid of the Unpleasant Fishy Smell from Your Dog
While it's normal for dogs to get a bit smelly from time to time, there are certain situations when unusual odors can be a sign of problems that you may… Read More
By Katie Melynn Wood 3 hours ago
Male vs Female Brown Recluse Spiders: How to Spot the Differences
The Brown recluse (Loxosceles reclusa) is a species of North American spider with a bad reputation. Although small, brown recluse spiders are deemed one of the most dangerous spiders in… Read More
By Sarah Psaradelis 4 hours ago
The 5 Fastest Growing Towns in Northern California Everyone Is Talking About
The United States is currently experiencing abnormally low growth rates due to fewer immigrants, declining birth rates, and an aging population. However, depending on where you stay, it might seem… Read More
By Chanel Coetzee 4 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:
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.
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.
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.
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.
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.
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.
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.
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.
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.
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
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!
The Top 10 Reasons Minnesota Has the Best Lakes in the U.S.
Minnesota, often called the "Land of 10,000 Lakes," stands as a testament to the natural splendor of the United States. Nestled in the heart of the Midwest, this state is… Read More
By Clemence Maureen Feniou 4 hours ago
7 Reasons Illinois’s Pike County Has the Best Deer Hunting in the U.S.
Illinois's Pike County has the best deer hunting in the U.S. With its picturesque landscapes and thriving whitetail deer population, this county has earned its reputation as one of the… Read More
By Kristin Hitchcock 6 hours ago
African Dwarf Frog Size Comparison: How Big Do African Dwarf Frogs Get?
Frogs are found in all shapes and sizes, but African dwarf frogs are particularly small amphibians. The name “African dwarf frog” is used to describe four different species in the… Read More
By Sarah Psaradelis 7 hours ago
15 Plants You Can Use to Make a Gorgeous Autumn Wreath
There are so many things to love about the fall season! Excitement for all of the approaching holidays, cozy evenings indoors with your loved ones, and cool and enjoyable weather… Read More
By Sam Hindman 7 hours ago
10 Reasons Wisconsin’s Buffalo County Has the Best Deer Hunting in the U.S.
It’s well-known that Wisconsin is one of the best states for hunting deer. While the abundance of deer is a big draw, hunters can also enjoy the stunning fall colors.… Read More
By Chanel Coetzee 7 hours ago
Are Dogs Allowed In Home Depot? 10 Important Rules to Know
Dogs are sometimes allowed in Home Depot, but each individual store has its own policy. Please call ahead to see if your local Home Depot allows dogs, and make sure… Read More
By Katelynn Sobus 7 hours ago
Black and White American Flag: History, Meaning, and Symbolism
What can a simple piece of cloth bearing a distinct design convey about the identity, aspirations, and conflicts of a nation? Flags are powerful symbols that can either unite people… Read More
By Sanaphay Rattanavong 7 hours ago
Mars Placement: Meaning and Traits for All 12 Houses of the Zodiac
Astrology is much more complicated and involved than just knowing the Sun Sign, which is what people are talking about when they say "I'm a Cancer," or "I'm an Aries."… Read More
By Dayva Segal 8 hours ago
Discover the Largest Plantation in Maryland That Epitomizes Chesapeake Bay Charm
Located on Maryland's Eastern Shore, Wye House was an 18th-century plantation that played a prominent role as the state developed. In more recent years, it has become an important archaeological… Read More
By Katie Melynn Wood 8 hours ago
Discover the Small U.S. Town That Got 61-Feet of Rain in a Single Year
In the heart of the Hawaiian archipelago lies Pu'u Kukui on Maui Island. It is one of the rainiest towns in the United States. It is an astonishing place where… Read More
By Shreya Agrawal 8 hours ago
10 Colors Of Knock Out Roses to Liven Up Your Yard
If you want to try growing roses but are intimidated by their complex care and needs, Knock Out roses are the perfect solution. These shrub roses bloom multiple times per… Read More
By Katie Melynn Wood 9 hours ago
7 Signs You Need to Install a French Drain in Your Yard
When it comes to home ownership, dozens of different issues can arise that beg the question — do I need a French drain? You may have issues with standing water,… Read More
By Katarina Betterton 10 hours ago
Discover the Largest House in Indiana And Just How Big 50,000 Square Feet Really Is
Although you might not imagine that the midwestern United States is full of large, luxurious homes, you might be surprised by what you might find in Indiana. For example, several… Read More
By Baylee Bunce 10 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.