0 an animal that produces eggs and uses the heat of the sun to keep its blood warm
1 any of various animals whose blood temperature changes with the outside temperature and whose bodies are covered by scales or plates (= hard material):
Snakes, turtles, and crocodiles are all reptiles.
Humans, insects, reptiles, birds and mammals are all animals.
Birds, fish, mammals, amphibians, and reptiles are all vertebrates.
But they also eat small animals, other reptiles – and other alligators!
Reptiles are cold-blooded animals – they need the sun to stay warm.
There are many insects that look like flowers and plants, but some reptiles do, too.