Seeing a charging bison send grandfather flying was like ‘watching a bulldozer move out at 45 miles an hour’  NBC NewsBison tossing man 8 feet in air at Yellowstone National Park caught on video  Global NewsGrandfather recovering from surgery after bison attack at Yellowstone sent him flying  CNNBison Attacks Tourist at Yellowstone National Park, Tossing Him Into the Air  The New York TimesBison rams elderly man in Yellowstone, flinging him into the sky  BBC