Getty Images
MCU Grey wolf lying in snow, looking to camera, Arctic circle
MCU Grey wolf lying in snow, looking to camera, Arctic circle
Getty Images
MS TS Wolf walks through snow / Yellowstone National Park, Wyoming, USA
MS TS Wolf walks through snow / Yellowstone National Park, Wyoming, USA
PBS
Pbs Learning Media: Wolves of Yellowstone National Park
Discover why the gray wolves were important to Yellowstone National Park before they become extinct in that area. Find out how gray wolves were reintroduced back into this area. [5:19]