This large, shaggy ball standing in icy waters represents one of the largest terrestrial predators. We're talking about the brown bear, whose sizes are surpassed only by its cousin, the polar bear. The largest individuals of this species can be found in Alaska, where some individuals reach an impressive weight of up to 700 kg. These remarkable sizes are a result of a rich diet of salmon, caught in big amounts from the rushing Alaskan streams. Therefore, these aquatic excursions are not just for pleasure or cooling off; but a strategic move aimed at accumulating thick layers of fat. This thick layer of fat allows them to survive long, frigid winters.