What’s a reptile?

Phylum: Chordata

Examples: snakes, lizards

Description: Reptiles are air-breathing vertebrates that lay their eggs on land, though some actually live in water. They have scaly skin, and modern reptiles are cold-blooded, although some large prehistoric ones may have been warm-blooded. Reptiles are a leftover category; rather than having defining features of their own, they are classified as the vertebrates that produce eggs with an amniotic sac that aren’t mammals or birds.