Endotherm

Endotherm (Seagull)

Endotherms are any warm-blooded animals that can "maintain a constant body temperature independent of the environment". Animals in this category are mainly birds and mammals, but there are some fish as well. If an animal starts losing more heat than it can generate, its metabolism increases or the animal starts to shiver to raise its body temperature. On the other hand, if heat it starts generating more heat than it is losing, it will begin to pant or perspire to increase heat loss. They require more food than endotherms to produce heat continuously and survive cold temperatures.