During their "hibernation," bears do not eat or drink as often, and they will rarely (if at all) defecate or urinate, according to the Alaska Department of Fish and Game.

Hyperphagia allows bears to hibernate without needing to eat or drink anything. In fact, according to the National Forest Foundation, bears can sleep more than 100 days without eating or drinking.

Why do bears hibernate? Many bears in the Northern Hemisphere hibernate when the weather is cold and food is scarce. Hibernation is a deep sleep that allows a bear to live without food for long ...

Superficially, hibernating bears seem passive and inert. For five months or more, they do not eat, drink, urinate, defecate or move, except occasionally to turn over or shiver.

One of the great marvels of nature is how bears, the largest carnivore in North America, are able to hibernate all winter, living off stores of fat they have built up through the rest of the year ...

Bears can hibernate under decks, in crawl spaces. During hibernation, bears try to find a hollowed out log or tree, crevices between large boulders or holes in the ground where they can hunker ...

Bears across Europe are competing, not for food or mates, but for who can sleep the longest. Inspired by March Madness, March Napness is an annual bracket-style tournament where hibernating bears ...

As winter approaches, bears in Oregon will eat excessively and almost non-stop in order to prepare to hibernate. Here's what to know.