The brown bear of Alaska is the largest living carnivore with a top weight of more than 1,600 pounds. The size of the Alaska bear is related to the abundant food supply: hordes of salmon, berries, mice, marmots, and carrion.

These bears are most active in the daytime and are usually solitary, except when drawn to a common source of food. The cubs remain with their mother for almost two years and take six or seven years to reach full size and weight.