Ectotherm

This is a snake. Snakes and other reptiles are examples of ectotherms. Ectotherms are not warm blooded organisms, so they depend on external sources of heat to survive. Many reptiles use the sun to warm themselves when they are too cold, and they seek shade when they are too hot. Many ectotherms go into a type of hibernation called "topor" when they get too cold. This allows the animal to slow its metabolism in order to conserve energy and heat. They have a harder time regulating their body temperature since it is totally dependent on their environment.