Animals / hibernation-process-in-brown-bears
Facts about Hibernation Process in Brown Bears
- 05
Fat reserves accumulated before hibernation can account for roughly one-third of a brown bear's total body weight entering the den.
- 04
The body temperature of brown bears drops only modestly during hibernation, falling just a few degrees Celsius, unlike smaller hibernators whose temperatures plummet near freezing.
- 03
A pregnant brown bear gives birth during hibernation, nursing cubs through winter without ever fully waking to eat or drink.
- 02
Brown bears do not truly sleep through hibernation but remain in a light torpor, capable of waking quickly if disturbed.
- 01
During brown bear hibernation, heart rate drops from around 40–50 beats per minute to as few as 8 beats per minute.