10. Endotherm

This is a picture of a bald eagle. This bald eagle represents an endotherm. An endotherm is an animal that can control its own internal body temperature. All birds, such as eagles, and mammals are endothermic. An eagle uses the food it eats, such as fish, to generate heat in order to maintain its body temperature. Because of this, eagles are able to be active and move around even when it is winter and the temperature is relatively cold.