Reptiles are actually specified by standard elements such as respiring fresh air, setting eggs plus having dermis covered up in many scales. Altogether, there are actually more than 8,000 types of reptiles, broken into 4 main forms: Sphenodontia,types of pet snakes, Crocodilia, Squamata plus Testudines. One can find now almost 23 types of Crocodilia, sort of reptile which will may include crocodiles, aligators,caiman