Bears hibernate during the winter months in most areas of the world. ... Mammals considered true, or deep hibernators, such as chipmunks and ground squirrels, experience a drastic decrease in body temperature during hibernation.

Do bears hibernate yes or no?

Short answer: yes.

When people defined hibernation simply in terms of temperature reduction, bears were not considered hibernators. ... They lower body temperature to near freezing but wake up every few days to raise body temperature to near normal, eat stored food, and eliminate body wastes.

Are there any bears that do not hibernate?

The sun bears (Ursus malayanus) and sloth bears (Melursus ursinus) of Southeast Asia do not hibernate. Nor do the spectacled bears (Tremarctos ornatus) of South America. All live in climates without significant seasonal shortages of food and thus need not den up for winter.