Types of Animals

 

An animal class is made up of animals that are all alike in important ways.  Scientists have grouped animals into classes to make it easier to study them.

The five most well known classes of vertebrates (animals with backbones) are mammals, birds, fish, reptiles, amphibians.

There are also a lot of animals without backbones.  These are called invertebrates.  Two of the most commonly known classes are arachnids (spiders) and insects.