do polar bears hibernate?

Answer 1

. Polar bears don't enter deep hibernation. Deep hibernation applies to an animal whose body temperature drops to 5C (41F) for a period of days or weeks. Deep hibernators also show a marked drop in heart rate, and are slow to wake up when disturbed.

3. Only pregnant female polar bears hibernate.

a. Polar bears aren't deep hibernators, but enter a state of carnivore lethargy. Though hibernating females sleep soundly, they're easily and quickly aroused.

b. The female polar bear's heart rate slows to about 27 beats per minute from a normal resting heart rate of about 46 beats per minute (Stirling, 1988).

c. When hibernating, a female's body temperature may drop slightly, perhaps to 35C (95F), or it may remain normal at 37C (98.6F). Unlike most other hibernators, female polar bears give birth while hibernating. High body temperature is needed to meet the demands of pregnancy, birth, and nursing (Stirling, 1988).

4. Researchers have found that nonhibernating polar bears, during times of food scarcity, can efficiently utilize their energy reserves much like hibernating bears (Stirling, 1988).

Answer 2

I believe all bears do. The sad thing about polar bears is that they're finding out that they are drowning, due to the lack of pieces of ice , because of the continuing effects of global warming. If it continues, we may only see polar bears in the zoo,instead of their natural habitat. Check out "An Inconvenient Truth" ....

Answer 3

Yes

Answer 4

Yes, they do.