Snakes are animals with dry, scaly skin which reproduce by laying eggs. They maintain their body temperature by using external warmth from their environment. Snakes have no external ear openings, nor any eyelids. There are two types of snakes.. poisonous and non Poisonous. But several times, as a common man does not know to identify, non-poisonous snakes area also killed considering dangerous. In the desert, there are highly toxic snakes whose body color is just like sand and can not be noticed till one reaches very close to them. They can slide their full-body inside the sand and disappear in just a second.