The Canada Lynx is threatened. NPS Photo. Greenback Cutthroat Trout is threatened. NPS Photo. Mexican Spotted Owl is threatened. NPS Photo. North American Wolverine is proposed threatened. NPS Photo. This table is a list of species specific to Rocky Mountain National Park federally listed as endangered, threatened, or candidates for listing by the U.S. Fish and Wildlife Service under the provisions of the Endangered Species Act.