Dictionary of Human Evolution and Biology

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Dormant condition into which some mammals enter in order to conserve energy; aka torpidity. Torpor is accompanied by a lower metabolic rate and concomitant physiological changes as the animal’s body temperature drops in conformity with the ambient temperature of the environment; technically, such a mammal is poikilothermic during this period. Several cheirogalids enter varying degrees of torpor.

See estivation and hibernation.

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