The Arctic fox is a small fox that inhabits Alaska's Arctic regions. It is known for its pure white fur during the winter phase, a change from the blackish brown coat of the summer months. It feeds on lemmings and other rodents in the tundra landscape, and forages on carrion from the polar bear. The fox population is declining in Alaska's Arctic, thought in some part due to competition from the red fox, which is encroaching upon its habitat.