A variety of reptiles, amphibians, mammals, birds and arthropods are found in the North Cascades. A small number of grizzly bears (Ursus arctos horribilis) inhabit the far northern Cascades, near the Canada-United States border. A breeding pack of wolves was confirmed in Okanogan County in 2008, the first such pack in Washington state since the 1930s. Other predator species include mountain lions, black bears, fishers, and wolverines.