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Search – Discover Different Types of Animals
A-Z Animals is the world’s most trusted online animal encyclopedia. If you want cute animals, types of wild animals, exotic pets, weird animals or are looking for comprehensive pet guides for dogs and cats, we’ve got you covered!
We believe that if people know more about the world’s creatures they will better care for them. Thats why we add new animals for you to discover – each and every day! Learn about any animal using the search box below:
The 7 Major Different Types Of Animals
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.
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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.
Pet Guides: Everything To Know About Cat and Dog Breeds
Most Popular Pet Dog Breeds
See a complete list of dog breeds.
Most Popular Pet Cat Breeds
See a complete list of cat breeds.
Expert Pet Product Reviews
The AZ Animals team has spent years working with and studying the latest research on what products are best for our pets and yours, and we’re excited to share our expert pet product recommendations with you.
See all of our Expert Pet Product Reviews.
Explore Types of Wild Animals from Around the World
- African Animals
- Asian Animals
- Central American Animals
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- European Animals
- North American Animals
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- Oceanian Animals
- South American Animals
Animals By Letter: Explore A to Z Animal Lists
See Endangered Animals Lists
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- Critically Endangered
- Near Threatened
- Least Concern
- Data Deficient
- Not Evaluated
Animal Reference Guides
Animals – Facts, Pictures and Resources 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:
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- Amur Leopard
- Polar Bear
- White Tiger
- Arctic Fox
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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.