Polar bear the fourhorn sculpin. With the exception of pregnant females, polar bears are active year-round, although they have a vestigial hibernation induction trigger in their blood. Unlike brown and black bears, polar bears are capable of fasting for up to several months during late summer and early fall, when they cannot hunt for seals because the sea is unfrozen. When sea ice is unavailable during summer and early autumn, some populations live off fat reserves for months at a time, as polar bears do not 'hibernate' any time of the year. Being both curious animals and scavengers, polar bears investigate and
Polar bear jail Polar bear jail Polar bear jail (also known as Polar Bear Holding Facility) is a special building in Churchill, Manitoba where polar bears that are considered troublesome or dangerous are isolated before they can be relocated. Before establishing the facility, polar bears who were considered dangerous used to be shot. In 1982 (according to other sources, in 1983, after a person was mauled by a bear on the street) the holding facility was first established in the building officially named "House D-20". Before that, the facility was used as a military morgue, but now it is used for holding live