This document lists and describes characteristics of reptiles. It notes that reptiles are vertebrates that are either oviparous (egg-laying) or ovoviviparous (egg-retaining), breathe through lungs, have dry skin covered in scales or plates, and are cold-blooded. Reptiles can have four legs, no legs, or fins and live on land or in water. Examples mentioned include snakes, lizards, turtles, crocodiles, and alligators.