Reptiles in the Mojave Desert are a group of vertabrates represented by two different orders;
Squamata - Lizards and Snakes
Testudines - Turtles

Reptiles are cold-blooded and don't have a constant body temperature. They are only able to a limited extent to actively regulate their body temperature, which is largely dependent on the environmental temperature.

Most reptile species are carnivorous and egg-laying, however, there are exceptions.