What happens to the bear during the hibernation?

During winter sleep (or hibernation), bears are greatly reduced metabolism and slowed down all metabolic processes, so that they do not consume energy for metabolism and movement.

The level of basal metabolism decreases drastically, protein metabolism decreases, all processes, including pulse and respiration, slow down. Bears, naturally, do not eat during the winter sleep, they do not have urination, and only in the spring, when they begin to leave the den, they gradually start these processes step by step.

At the same time during the winter sleep, bears continue to grow bones, fur grows. Bears survive in winter without food, because it is due to their nature. During the winter sleep they have a very different physiology, and after, in the spring, they come out of the den and for a long time come to their senses - this period is called walking hibernation.

Sleeping bears of months on 5-6 and leave from a den in the spring when there is a first grass. Leave the lairs all at different times: first adult males, then single females and young individuals, and last - lactating females with cubs (around April-May).