Signs that a wolf is near... - Picture of Wood Buffalo National Park, Northwest Territories - Tripadvisor
Wolves, Bison and the Dynamics Related to the Peace-Athabasca Delta in Canada's Wood Buffalo National Park (Circumpolar Research Series (Inactive)): Carbyn, Ludwig N., Oosenbrug, S. M., Anions, D. W., Peterson, R. O.:
Wildlife Viewing - Wood Buffalo National Park
Yellowstone Wolf Facts (U.S. National Park Service)