A characteristic of endotherms is that they a. control body temperature through behavior. b. control body temperatures from within. c. obtain heat from outside their bodies. d. have relatively low rates of metabolism.
Step 11 of 2
As endotherms, birds and mammals have a high metabolism rate which produces body heat. This heat keeps their bodies warm. In addition, the bird’s feathers and the mammal's hair help them in insulating the body heat.