Reptiles, a various team of air-respiratory vertebrates, are characterized by their scaly pores and skin, amniotic eggs, and ectothermic (chilly-blooded) metabolism. They may be historically classified into four residing orders: Crocodilia (crocodiles and alligators), Sphenodontia (tuataras), Squamata (lizards and snakes), and Testudines (turtles a