Ursus arctos yesoensis is a subspecies of the brown bear found primarily on the Japanese island of Hokkaido. This bear is known for its large size, with males typically weighing between 200 to 400 pounds. It has a thick fur coat that varies in color from dark brown to light brown, helping it adapt to its environment. The yesoensis subspecies is primarily herbivorous, feeding on a diet of berries, nuts, and plants, but it may also consume fish and small mammals. Conservation efforts are in place to protect this bear, as its habitat is threatened by human activities and climate change.