Bison that appear to be grazing peacefully are able to accelerate into a terrifying pace, making them among the most dangerous animals in Yellowstone, where one of the giant bovines recently charged at and tossed a grandfather.
Carl McDaniel, 65, suffered multiple bone fractures in the July 10 attack at the national park but lived to tell the tale, as seen in a video he recorded a few days later from his bed at Bozeman Health Deaconess Medical Center in southern Montana.
