The Greater Yellowstone Ecosystem and northwest Montana are the only areas south of Canada that still have large grizzly bear (Ursus arctos horribilis) populations. Loss of habitat and human-caused mortality led to the 1975 listing of the grizzly bear as a threatened species in the lower 48 states. Grizzly bears may range over hundreds of square miles, and the potential for conflicts with human activities, especially when human food is present, will make the presence of a viable grizzly population in Greater Yellowstone a continuing challenge for its human neighbors.  

Report A Sighting of this species.  

Updated 8/16/10