Which of the following is not required by animals to control body temperature? A. Animals must be able to conserve heat when temperatures drop.

B. Animals must be able to get rid of excess heat when temperatures increase.

C. Animals must switch between ectotherm and endotherm methods.

D. Animals must find a source of heat.

The question says, which of the following is not required by an animal to control body temperature. All these statements are true except D. The correct option is D. The fat in animals bodies keep them warm at all times and animals do not have to look for a source of heat to keep warm. They are able to regulate their body temperature internally.