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
250 Amazing British Dog Names
Brits love their dogs! Britain is the country of origin for so many iconic dog breeds - the Yorkshire terrier and the Staffordshire bull terrier to name just two. It… Read More
By Sharon Parry 5 hours ago
7 Clean Energy Sources: Which is the Best for Nature and Humans?
Clean energy is all the rage these days, and billions of dollars are being invested in it. Countries, companies, and investors who place their bet on the right technologies could… Read More
By Drew Wood 7 hours ago
Are Carpenter Bees Pollinators and Just How Valuable Are They To Nature?
Although you might not know it, pollination is one of the most important tasks on planet Earth. If the insects that pollinate plants disappeared tomorrow, the food chain would be… Read More
By Alanna Davis 9 hours ago
Lousiana Crabbing Season: Timing, Bag Limits, and Other Important Rules
As humans evolved, so did their techniques to get food. We became hunters, as well as gatherers. Of course, that was long ago. Now, we go to the grocery store… Read More
By Patrick MacFarland 11 hours ago
The Most Effective Homemade Fire Ant Treatment
Fire ants are some of the toughest insects you'll find in the U.S. These adaptable survivors can thrive in many different environments and withstand extreme conditions. Fire ants usually build… Read More
By Kellianne Matthews 23 hours ago
12 Things that Attract Spiders to Your Home
Most household spiders are not only harmless, but they are also actually quite beneficial to your home. Serving as a free and natural pest control, spiders hunt and eat pests… Read More
By Kellianne Matthews 1 day ago
18 Irritating Pests Repelled by the Scent of Tea Tree Oil
Quite a few pests can make daily life a problem. Whether you're out in nature, trying to grow a garden, or even sitting in the safety of your own home,… Read More
By Nina Phillips 1 day ago
Does Lavender Repel Mice? Yes! Here’s How to Use It
Having mice in your home is never a pleasant experience. These little rodents often chew through furniture, important wires, and food on top of leaving droppings all over your house.… Read More
By Nina Phillips 1 day ago
The 15 Most Valuable Shipwreck Treasure Hauls Ever Recorded
The lure of sunken treasure is captivating. The mystery of finding long-lost jewels, coins, and artifacts at the bottom of the ocean can be very alluring. Sunken ships also offer… Read More
By Jennifer Geer 2 days 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 Alaskan Malamute
Animals that Start with B
Example: The Baird’s Rat Snake
Animals that Start with C
Example: The Cactus Mouse
Animals that Start with D
Example: The Deinocheirus
Animals that Start with E
Example: The Evening Grosbeak
Animals that Start with F
Example: The Field Spaniel
Animals that Start with G
Example: The Goliath Beetle
Animals that Start with H
Example: The Hawaiian Goose (Nene)
Animals that Start with I
Example: The Irish Doodle
Animals that Start with J
Example: The Japanese Chin
Animals that Start with K
Example: The Kaua’i ‘Ō‘ō
Animals that Start with L
Example: The Loach
Animals that Start with M
Example: The Mauzer
Animals that Start with N
Example: The Nubian Goat
Animals that Start with O
Example: The Ovenbird
Animals that Start with P
Example: The Plains Hognose Snake
Animals that Start with Q
Example: The Quetzal
Animals that Start with R
Example: The Redtail Catfish
Animals that Start with S
Example: The Sivatherium
Animals that Start with T
Example: The Tree Viper (Bamboo Viper)
Animals that Start with U
Example: The Utonagan
Animals that Start with V
Example: The Viper
Animals that Start with W
Example: The Walleye Fish
Animals that Start with X
Example: The Xiaosaurus
Animals that Start with Y
Example: The Yellow Belly Ball Python
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.
Irish Setter
Has a beautiful coat that's flowing and feathered!
Boston Terrier
Friendly, lovable and very strong!
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!
The Largest Channel Catfish Ever Caught in Arkansas
In a world of records, there are always these competitions carried out to be the best one. When it comes to the world of fishing, there is always a friendly… Read More
By Patrick MacFarland 2 days ago
Florida’s Alligator-Infested Rivers: Can You Swim In the Rainbow River?
American alligators are the only species that can be found natively in the United States (and also in Mexico’s Gulf Coast waters). These ferocious creatures are famous for roaming around… Read More
By Patrick MacFarland 2 days ago
Australian Cattle Dog Prices in 2024: Purchase Cost, Vet Bills, and More!
The Australian cattle dog, also known a blue or red heeler, is a persistent, intelligent, and loyal pup with boundless energy. They are herders and their cleverness frequently leaves their… Read More
By Angie Menjivar 3 days ago
The 13 Oldest Insects Still on Earth Today
Scientists have determined that planet Earth is billions of years old. And in that time, there have been creatures that roamed this Earth that no longer exist. Wooly mammoths, dinosaurs,… Read More
By Patrick MacFarland 3 days ago
Do Thrips Bite People? Does It Hurt?
As temperatures begin to rise, many people return to their yards to spend time outdoors throughout the season. Although this is a very exciting time for many, the warmer months… Read More
By Alanna Davis 3 days ago
Irish Setter Prices in 2024: Purchase Cost, Vet Bills, and More!
Have you been thinking about adding a new puppy to your family? If so, you might be exploring different dog breeds to figure out which one would be the best… Read More
By Alanna Davis 3 days ago
11 Plants That Repel Pesky Earwigs
While some insects are welcome visitors in many gardens, others can be troublesome. Among them are earwigs, and while these insects are negligible in small numbers, they can have devastating… Read More
By Alanna Davis 4 days ago
Oregon Crabbing Season: Timing, Bag Limits, and Other Important Rules
Crabbing is a hobby that nearly anyone can get into. Both experts and amateurs alike enjoy this sport for a variety of reasons. Whether it be the fresh food it… Read More
By Alanna Davis 4 days ago
The Largest Flathead Catfish Ever Caught in Oklahoma
There are over 177 species of fish in Oklahoma, with around 13 of them being catfish. However, most of the catfish species are rather small, and they can fit in… Read More
By Nina Phillips 4 days ago
The Top 6 Reasons Hummingbirds Suddenly Disappeared From Your Yard
Hummingbirds are one of the most wonderful parts of the spring and summer. They are almost universally adored by people across the globe, and many individuals spend a lot of… Read More
By Alanna Davis 4 days ago
Do Dragonflies Really Eat Mosquitoes? How Many?
Dragonflies are the most beautiful creatures on this planet. They are insects that fly around in various places, usually in tropical climates. Very few exist in other regions. Unfortunately, climate… Read More
By Patrick MacFarland 4 days ago
The Most Popular Dogs Around the World
Dogs are more popular in some parts of the world than others, and the preferred breeds differ by country as well. In some countries, dogs are more valued as pets,… Read More
By Drew Wood 5 days ago
5 Reasons You Should Buy Ladybugs for Your Garden
The first signs of spring can be an exciting time for many individuals across the world. However, one sign of spring that some people can't get behind is the reemergence… Read More
By Alanna Davis 5 days ago
Afghan Hound Prices in 2024: Purchase Cost, Vet Bills, and More!
Few dogs are as elegant and beautiful as Afghan Hounds. As their name suggests, this proud breed originates from the country of Afghanistan. Although this dog has been popular throughout… Read More
By Alanna Davis 5 days ago
The 10 States With the Most Waterfalls in the U.S.
Some waterfalls trickle down delicately while others rush into the water below with such intensity, it leaves you stunned. Take Niagara Falls, for example — this is such a massive… Read More
By Angie Menjivar 5 days ago
Louisiana’s Alligator-Infested Rivers: Why The Calcasieu River Is an Alligator Haven
The Calcasieu River meanders through the rural forests and bayous of southwestern Louisiana before meeting the sea in the Gulf of Mexico. The National Park Service describes its forested shorelines… Read More
By Sharon Parry 5 days ago
The States With the Most Hummingbird Species in America
Hummingbirds are one of the most beloved signs of spring, and luckily, many states across America get to enjoy their presence. However, certain states are home to more native species… Read More
By Alanna Davis 6 days ago
15 Countries With Active Separatist Movements
On average, since 1960, the world has gotten 2 new countries every year. Some of these have been through a peaceful process of decolonization, while others are the result of… Read More
By Drew Wood 7 days ago
The 9 Most Dangerous Ants in the World
In a world full of creatures, some of them can be the most majestic things you've ever seen. Others can be one of the most terrifying animals in the world.… Read More
By Patrick MacFarland 7 days ago
Belgian Sheepdog Progression: Growth Chart, Milestones, and Training Tips
Belgian sheepdogs are part of the Belgian Shepherd family of dogs. They are included in the American Kennel Club herding group and are sometimes called Groenendael. Other dogs in the… Read More
By Sharon Parry 7 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.
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:
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.
