Reptiles, a diverse group of air-breathing vertebrates, are characterized by their scaly skin, amniotic eggs, and website ectothermic (chilly-blooded) metabolism. They are really customarily labeled into four dwelling orders: Crocodilia (crocodiles and alligators), Sphenodontia (tuataras), Squamata (lizards and snakes), and Testudines (turtles and