The largest bear is the polar bear, which inhabits the arctic coastal areas of the north. The brown bear has the widest range of any species of bear in the world. Habitat Brown bears prefer mountain forest, tundra and coastal habitats. Adult males normally weigh more than adult females. It's not until October or November, however, when the fertilized egg begins its embryonic stage of development inside the womb.
Bears give birth to the smallest of all mammalian young in proportion to the size of the parent.
Usually two or three cubs are born between January and March. The sow will generally give birth to another litter the first spring after separating from her cubs. Under most circumstances, brown bears live as lone individuals, except for females accompanied by their cubs. Despite their propensity for solitary existence, brown bears congregate where food is abundant, such as at salmon streams or garbage dumps. The North American populations of brown bears living in the interior portion of the continent are referred to as grizzly bears.