The glacier bear, sometimes referred to as the "blue bear", is a subspecies of American black bear with silver-blue or gray hair endemic to Southeast Alaska. Little scientific knowledge exists of their total extent and the cause of their unique coloration. Most of the other black bears in southeast Alaska are listed under the subspecies Ursus americanus pugnax. The USDA Forest Service lists U. a. emmonsii as one of several subspecies of black bears, although no evidence supports the subspecies designation other than hair coloration.
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