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  2. Cave bear - Wikipedia

    en.wikipedia.org/wiki/Cave_bear

    Some evidence indicates that the cave bear used only caves for hibernation and was not inclined to use other locations, such as thickets, for this purpose, in contrast to the more versatile brown bear. This specialized hibernation behavior would have caused a high winter mortality rate for cave bears that failed to find available caves.

  3. Bear ‘Tucking Themself In’ for Hibernation in Yellowstone ...

    www.aol.com/bear-tucking-themself-hibernation...

    Like bears do, they "bulk up" for their hibernation before they choose to do it. Their heart rates decrease, breathing slows, body temperatures drop, and they go into a deep sleep for weeks or ...

  4. Arctodus - Wikipedia

    en.wikipedia.org/wiki/Arctodus

    To the south, the Interior Highlands had a very high density of Arctodus simus specimens (second only to the black bear), [33] [88] due to the high rate of preservation in the cave-rich region. Sympatry between the two species is most apparent in Missouri - Arctodus simus has been found in association with black bears at Riverbluff, Bat and Big ...

  5. Hibernation - Wikipedia

    en.wikipedia.org/wiki/Hibernation

    The heart rate variability only increases around three weeks before arousal and the bears only leave their den once outside temperatures are at their lower critical temperature. These findings suggest that bears are thermoconforming and bear hibernation is driven by environmental cues, but arousal is driven by physiological cues. [31]

  6. Man finds hibernating bear in cave - AOL

    www.aol.com/news/2014-12-24-man-finds...

    Man finds hibernating bear in cave. Morgan Giordano. Updated July 14, 2016 at 10:31 PM. Man Finds Bear In Cave.

  7. This Bear Simply Won't Go Into Hibernation - AOL

    www.aol.com/news/2014-02-25-this-bear-simply...

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  8. American black bear - Wikipedia

    en.wikipedia.org/wiki/American_black_bear

    Although naturally-made dens are occasionally used, most dens are dug out by the bear. [68] During their time in hibernation, an American black bear's heart rate drops from 40 to 50 beats per minute to 8 beats per minute, and the metabolic rate can drop to a quarter of the bear's (nonhibernating) basal metabolic rate. These reductions in ...

  9. Half-asleep bears — unable to hibernate — seen walking around ...

    www.aol.com/half-asleep-bears-unable-hibernate...

    “For every 1°C (about 1.8°F) increase in winter minimum temperatures, bears reduced hibernation by an average of six days,” the study said. As a result, researchers said that bears are ...