Clash: Encounters of Bears and Wolves

S1 E1: Yellowstone National Park is a world of predators, scavengers and opportunists. In this vast and complex kingdom, size and power square off against speed and teamwork: mighty grizzly bears contend with powerful packs of wolves for control of the food supply. Normally these two fearsome hunters would rule their ranges uncontested, but in Yellowstone they must compete, and even learn to share.