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
Agreement on the Conservation of Polar Bears most detrimental to the polar bear population. Additionally, the agreement holds member states accountable for taking appropriate actions to protect the ecosystems of which the polar bears dwell, paying special attention to places where polar bears create dens, do a majority of their feeding, and where they migrate. States also must manage polar bear populations in accordance with proper conservation practices based on the best available scientific data. According to the agreement the killing of polar bears is only warranted for "bona fide" scientific purposes, to prevent serious disturbances of other living resources such as human populations, and by local