Discover, Appreciate, & Understand the Animal World!
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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.
Discover Your Favorite Animal Today!
Latest from A-Z Animals
Boston Terrier vs Pug: 5 Key Differences
Key Points: Boston Terriers are slightly larger than Pugs and typically weigh between 10-25 pounds, while Pugs usually weigh between 14-18 pounds. Both Boston Terriers and Pugs are known for… Read More
By August Croft 5 hours ago
10 Spiders In Florida
Key Points: The southern black widow spider is the largest venomous spider in Florida. The golden silk orb weaver is one of the most common spiders in Florida, particularly in… Read More
By Patrick Sather 7 hours ago
Where Do Bobcats Sleep?
Key Points Bobcats are nocturnal, meaning they sleep during the daytime and are active during the night. Bobcats have many resting areas and they are not picky about where they… Read More
By Nixza Gonzalez 17 hours ago
Bobcats in Massachusetts: How Many Are There and Are They Dangerous?
Bobcats are one of the few wildcats found in the United States, where they adapt easily, and live in various habitats. However, they are shy, elusive animals that prefer wild… Read More
By Niccoy Walker 19 hours ago
French Bulldog Lifespan
Key Points French bulldogs live an average of 10-13 years. Most mother French bulldogs can only give birth to two or three babies per litter. French bulldogs are generally considered… Read More
By August Croft 24 hours ago
How Old Is The World’s Oldest Great Dane?
Beloved by dog owners the world over, the Great Dane is famous for its large size, unique build, and gentle demeanor. Unfortunately, its physical characteristics are accompanied by quite a… Read More
By John Alois 1 day ago
Large Terrier Breeds
The two words that largely define the terrier breed are energetic and spirited. They are a hunter's companion as its a well known fact that terriers were bred to enter… Read More
By Lex Basu 1 day ago
Plant Cells vs Animal Cells: 10 Key Differences Explained
Plant and animal cells are both extremely important to the survival of millions of species and without them, life couldn’t exist. Although they share a lot of similarities, they… Read More
By Hannah Ward 1 day ago
German Shepherd vs Husky: 8 Key Differences Explained
At first glance, German shepherds and Siberian huskies may appear related, especially when they have similar colorations, but they only share a few similarities. Learn more about each breed and… Read More
By Angie Menjivar 1 day 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
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.
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.
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.
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.
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.
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.
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.
Animals that Start with A
Example: The Albino (Amelanistic) Corn Snake
Animals that Start with B
Example: The Bengal Tiger
Animals that Start with C
Example: The Chigger
Animals that Start with D
Example: The Dinofelis
Animals that Start with E
Example: The Enchi Ball Python
Animals that Start with F
Example: The Fritillary Butterfly
Animals that Start with G
Example: The Guinea Pig
Animals that Start with H
Example: The Hairy Woodpecker
Animals that Start with I
Example: The Ibex
Animals that Start with J
Example: The Javanese
Animals that Start with K
Example: The Kudzu Bug
Animals that Start with L
Example: The Lancetfish
Animals that Start with M
Example: The Meiolania
Animals that Start with N
Example: The Nicobar pigeon
Animals that Start with O
Example: The Oviraptor
Animals that Start with P
Example: The Panther
Animals that Start with Q
Example: The Quetzal
Animals that Start with R
Example: The River Otter
Animals that Start with S
Example: The Sri Lankan Elephant
Animals that Start with T
Example: The Teddy Bear Hamster
Animals that Start with U
Example: The Uintatherium
Animals that Start with V
Example: The Vizsla
Animals that Start with W
Example: The Wiwaxia
Animals that Start with X
Example: The Xiongguanlong
Animals that Start with Y
Example: The Yellow Bullhead Catfish
Animals that Start with Z
Example: The Zebra Tarantula
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.
Boston Terrier
Friendly, lovable and very strong!
Irish Setter
Has a beautiful coat that's flowing and feathered!
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
Abyssinian
One of the oldest cat breeds in the world!
Australian Mist
The only cat breed to originate in Australia.
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!
Pangolin vs Armadillo: 9 Key Differences Explained
When comparing a pangolin vs armadillo, it’s no surprise that many people often get the two animals mixed up. These two small-to-medium-sized insectivores both possess hard scales made of keratin,… Read More
By Patrick Sather 1 day ago
Alsatian vs German Shepherd: Are They Both the Same Thing?
Dogs truly are a man's best friend. They are loving, energetic, and full of unique personalities. Dogs, though, at the end of the day are a lot of work and… Read More
By Nixza Gonzalez 1 day ago
Mini Labradoodle vs. Goldendoodle
Are you interested in owning a dog that is absolutely adorable and friendly too? Then you may have found lots of information available on different doodle breeds. Doodle dogs have… Read More
By Volia Schubiger 1 day ago
Akita vs German Shepherd: What’s the Difference?
When it comes to comparing an Akita vs German Shepherd, you may be wondering what these two dog breeds have in common and what separates them from one another. There… Read More
By August Croft 2 days ago
7 Cats That Look Like Leopards (With Pictures!)
Leopards are fierce wild animals with a unique look that allows them to blend into their habitat. People that admire that look and desire it in their pet cats are… Read More
By Kyle Glatz 2 days ago
Dog Spirit Animal Symbolism & Meaning
Dog Spirit Animal infographic Dogs are descendants of wolves and coyotes. Some dogs were bred for the protection of herding farm animals. Other dogs were explicitly raised for hunting and… Read More
By Crystal 2 days ago
Discover 3 Fascinating Extinct Cat Breeds!
Approximately 31.9 million households in the United States have a pet cat! In fact, one in four American homes have at least one. Cats are very smart and lovable animals… Read More
By Jesse Elop 2 days ago
Bobcats in Wisconsin: How Many Are There and Are They Dangerous?
You might think wild bobcats only live in rural mountain areas, like the Colorado Rockies. And you'd be partially right, as Colorado has over 12,000 bobcats. But you might be… Read More
By Drew Wood 2 days ago
Bobcats in Colorado: How Many Are There and Are They Dangerous?
From majestic buffalo to elusive black bears, Colorado hosts a wide variety of iconic large mammals roaming through its wild mountains, canyons, forests, and prairies. One of the most fascinating… Read More
By Drew Wood 2 days ago
11 Types of Shepherd Dogs
Shepherd dogs are known by several names; sheepdogs, cattle dogs, and herding dogs. The American Kennel Club used to include all herding dogs in the Working Dog group, but in… Read More
By Cindy Rasmussen 2 days ago
Pit Bull Cropped Ears Vs. Natural: Purpose, Pros, and Cons
Cropping pit bulls' ears is a controversial practice. Some people think it makes the dog look tougher. Others say it is unnecessary and causes the animal unnecessary pain. What's the… Read More
By Drew Wood 2 days ago
3 Extinct Species of Elephants
Today, elephants dominate the mammal world in size. As the largest terrestrial mammal on Earth, elephants have fascinated thousands of scientists across generations. Not only are the elephants of modern… Read More
By Jesse Elop 2 days ago
Cutest Dogs in the World: Chihuahua Vs. Maltese
When comparing the Chihuahua vs the Maltese, which is cutest? Both are small, doe-eyed pups with big personalities. Maltese dogs have fluffy white coats, floppy ears, and can be quite… Read More
By Katelynn Sobus 2 days ago
Crow Spirit Animal Symbolism and Meaning
Crows are common birds found throughout the world. But did you know they are one of the most intelligent creatures on our planet? They use tools, mimic sounds, remember human… Read More
By Niccoy Walker 2 days ago
Corgi Lifespan: How Long Do Corgis Live?
Corgis have an average lifespan of 12 to 15 years. The Corgi is an absolutely adorable dog. They are best known for being an incredibly playful, outgoing, and even protective… Read More
By Volia Schubiger 3 days ago
Cutest Dogs in the World: Boston Terrier Vs. Pug
Are Boston terriers or pugs cuter? Decisions like this are always so difficult! So, let’s talk about everything that makes these breeds so cute and see if it helps you… Read More
By Katelynn Sobus 3 days ago
Meet the Smartest Snake in the World: King Cobras
Key Points: What sets king cobras apart from other snakes in mental capability is their ability to hunt in a variety of different ways using situation-specific tactics, rather than be… Read More
By Kristen Holder 3 days ago
What Kind of Dog Is Toto from the Wizard of Oz? Breed Information, Pictures, and Facts
The most-watched movie ever and one of the most well-known films across the world, The Wizard of Oz is a beloved classic with a timeless story, unforgettable music, and iconic… Read More
By Kellianne Matthews 3 days ago
Pit Bull vs. Labrador Retriever: 3 Key Differences
Pit bulls and Labrador retrievers are popular breeds in the USA. While these two dogs have many differences, there are a few similarities, like they are good with children and… Read More
By Chanel Coetzee 3 days ago
Dreaming of Crocodiles: Discover the Spiritual Meaning and Interpretation
Dreaming of Crocodiles infographic You understand that having this powerful being as a dream partner could have been a really powerful and startling dream. Dreaming of being the victim, getting… Read More
By Kirstin Harrington 3 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:
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.
