Reptile

From Encyc

Reptiles are a group of vertebrate animals that are cold-blooded, have scales, and lay eggs. They include alligators and crocodiles, turtles and tortoises, lizards, and snakes.

It was once thought that the dinosaurs were most closely related to modern reptiles, but now there is evidence that at least some of them were more like birds.

Not too active during winter.