When do black bears hibernate?

They redefined mammalian hibernation as a specialized, seasonal reduction in metabolism concurrent with scarce food and cold weather (Watts et al. 1981). Black bears are now considered highly efficient hibernators. Hibernators the size of chipmunks hibernate differently. read more

Black bears, Grizzly bears and Brown bears do go into a deep sleep during the winter months, known as torpor. Hibernation is when animals “sleep” through the winter. During this sleep, the animals will not wake up when they hear a loud noise or even if they are moved or touched. read more

The biggest wild American black bear ever recorded was a male from New Brunswick, shot in November 1972, that weighed 409 kg (902 lb) after it had been dressed, meaning it weighed an estimated 500 kg (1,100 lb) in life, and measured 2. 41 m (7. 9 ft) long. read more