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The brown bear (Ursus arctos) is a large bear distributed across much of northern Eurasia and North America. There are several recognized subspecies within the brown bear species. In North America, two types are generally recognized, the coastal brown bear and the inland grizzly, and the two types could broadly define all brown bear subspecies. Grizzlies weigh as little as 350 lb (159 kg) in Yukon, while a brown bear, living on a steady, nutritious diet of spawning salmon, from Coastal Alaska and Russia can weigh 1500 lb (682 kg). The exact number of overall brown subspecies remains in debate.