Heat loss is minimized by vasoconstricting the vessels supplying the skin. Countercurrent heat exchangers in the extremedies can help conserve heat or dissipate heat in birds and other endothermic animals. Heat dissipation by evaporation from the body surface. Panting and sweating. Behaviroal responses include animal migration, seeking sun or shadow, and burrowing in mud.
Some animals can increase the metabolic rate of heat production through shivering.
Brown fat is present in human infants and hibernating animals. Marine animals use blubber, a very thick layer of fat under the skin, to generate heat in very cold waters. B. Feedback mechanisms in thermoregulation. Body temperature is monitored by receptors in the skin and other organs although the mechanism for heat detection isn't well understood. These include the mechanisms listed above.