According to the Alaska Department of Fish and Game, brown bears and grizzly bears are both common names for the same species, Ursus arctos, but the main difference is their geographic location.
The finding, based on camera-trap images, also expands the known range of the brown bear (Ursus arctos) in Asia. It could also mark out the Limi Valley, in northwestern Nepal, as a “contact zone ...
Historically, grizzly bears (Ursus arctos horribilis) inhabited most of the western contiguous United States, while black bears (Ursus americanus) were common in forested areas throughout the country.