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A black bear was caught on video earlier this month readying itself for hibernation this winter in Yellowstone National Park. ... like most animals that hibernate. According to the National Forest ...
Before the winter months when they hibernate, bears enter a process called hyperphagia where they need to eat constantly in preparation. ... In addition to the fall season, bears are most likely ...
To prepare for hibernation, bears step up their eating, putting on up to 3 pounds a day in the fall and sometimes into winter. That can mean foraging for a meal for up to 20 hours a day, and they ...
Some species of mammals hibernate while gestating young, which are born either while the mother hibernates or shortly afterwards. [5] For example, female black bears go into hibernation during the winter months in order to give birth to their offspring. [6]
Grizzly bears also do not defecate or urinate throughout the entire hibernation period. The male grizzly bear's hibernation ends in early to mid-March, while females emerge in April or early May. [53] In preparation for winter, bears can gain approximately 180 kg (400 lb), during a period of hyperphagia, before going into hibernation. [54]
Bears on the East Coast tend to be heavier on average than those on the West Coast, although they typically follow Bergmann's rule, and bears from the northwest are often slightly heavier than the bears from the southeast. Adult males typically weigh between 57–250 kg (126–551 lb), while females weigh 33% less at 41–170 kg (90–375 lb).
For many bears, winter means hibernate or die. Here's what they do to survive. Plus: how climate change puts newborn cubs in danger.
Bears of northern regions, including the American black bear and the grizzly bear, hibernate in the winter. [ 110 ] [ 111 ] During hibernation, the bear's metabolism slows down, its body temperature decreases slightly, and its heart rate slows from a normal value of 55 to just 9 beats per minute. [ 112 ]