Winter hibernating in a den helps the bears to survive the hungry winter. In the hibernating bear almost not moving. While his body temperature lowered to 30°C, and the cardiac and pulmonary systems is slowed down considerably. This state of body and promotes conservation of the fat accumulated in the animals before hibernation, which allows him safely through the long winter.
The paw of the bear sucks not that hungry. Performing all these steps, it moisturizes dry feet and authrized dead and rough skin.