What is a reptile?

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Scientists classify animals into certain kinds of groups, such as mammals, amphibians, birds, and more. One of these groups you might be familiar with is reptiles! Examples of reptiles include lizards, snakes, alligators, crocodiles, and turtles.

To be a reptile, an animal has to have certain features -- the most noticeable of which is scaly skin! (As opposed to hair.) Reptiles also all breathe air, have internal (inside) backbones and skeletons, and give birth to their babies by laying eggs. (Although there are a few exceptions of lizards and snakes who don’t lay eggs.)

Reptiles are also well known (and different from mammals) because they are unable to control their own body temperature! This is sometimes known as being “cold-blooded.” When reptiles are feeling cold, they have to find a sunny spot in order to warm up -- their bodies can’t warm up or cool down on their own without help from the environment!

by   (whyzz writer)
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