The Sierra Nevada red fox (Vulpes vulpes necator), also known as the High Sierra fox, is a subspecies of red fox and one of the most endangered mammals in North America. Until recently, only a few dozen were known to exist in a remnant population near Lassen Volcanic National Park. Recent webcam discoveries of two additional surviving remnant populations near Sonora Pass in 2010 and on Mount Hood, Oregon in 2012 raise hopes for the species' survival.