Reptiles, a various group of air-breathing vertebrates, are characterised by their scaly pores and skin, amniotic eggs, and ectothermic (chilly-blooded) metabolism. They can be traditionally categorised into four residing orders: Crocodilia (crocodiles and blood python, alligators), Sphenodontia (tuataras), Squamata (lizards and snakes), and Testud