Dens may be caves, hollow trees, or other openings, which bears will with leaves, grass, and twigs for isolation. However, they keep most of their muscle and bone mass. They rely on their thick fur to keep them warm and will eat a lot in the weeks coming up to hibernation.
Even Though They Are Asleep, Hibernating Bears Still Burn A Lot Of Calories.
Bears can sleep more than 100 days without eating, drinking, or passing waste! Dens may be caves, hollow trees, or other openings, which bears will with leaves, grass, and twigs for isolation. During hibernation, the bear will tear on its own body fat.
No Much More Interesting, Slightly Longer Answer:
When they hibernate, they do so in a den. Bears can actually turn their pee into protein. This is increasingly uncommon as their habitat is warming, and the winters polar bears experience.
Black Bears Do Hibernate, Although The State Is Technically Torpor.
They sleep in dens made out of hollow trees, logs, or caves, where they are safe from predators while they hibernate. It is a common misconception that bears hibernate because of the cold weather, but that’s not the case. In general, you will always find pregnant females preparing their nests by denning directly making a cave in the snowdrift.
Black bears will hibernate in hollowed out logs, holes they dig in the ground, caves, and abandoned dens of other bears. Torpor can reduce oxygen consumption to 25%. There is strong evolutionary pressure for bears to stay in their dens during winter, if there is little or no food available.
Bears Do Crawl Into A Cave And Essentially Sleep Away The Winter Months, But What They’re Doing Is Not Hibernating, At Least Not In The True Sense.
As soon as they have found a cave or den to lay down they will have to eat a lot of extra food. This is only 12° f lower than their normal temperature. They rely on their thick fur to keep them warm and will eat a lot in the weeks coming up to hibernation.
