Kleptoparasitic bear steals wolves’ kill in filmed Yellowstone drama

National Parks Service describes rare incident in which sneaky grizzly joined chase with the Junction Butte pack

Wildlife officials in Yellowstone national park captured the unusual" sight of a cheeky grizzly bear tagging along with a pack of hunting wolves, then making off with their kill.

The enthralling video, posted to the National Parks Service Facebook page, shows the October incident in which the wolves from the Junction Butte pack in northern Yellowstone were joined by a lumbering grizzly as they hunted a herd of elk.