Homeothermy

Homeothermy, homothermy or homoiothermy[1] is thermoregulation that maintains a stable internal body temperature regardless of external influence.

This internal body temperature is often, though not necessarily, higher than the immediate environment[2] (from Greek ὅμοιος homoios "similar" and θέρμη thermē "heat").

Because many homeothermic animals use enzymes that are specialized for a narrow range of body temperatures, hypothermia rapidly leads to torpor and then death.

Additionally, homeothermy obtained from endothermy is a high energy strategy[5] and many environments will offer lower carrying capacity to these organisms.

In cold weather the energy expenditure to maintain body temperature accelerates starvation and may lead to death.