A grandfather visiting Yellowstone National Park was seriously injured after a bull bison charged him and tossed him about eight feet into the air during an incident at Bridge Bay Campground, according to multiple reports. Several outlets describe the attack as sudden and unprovoked, with the man and his grandson walking when the bison began behaving aggressively and then moved in their direction. Witnesses and a photographer who filmed the event said the bull appeared agitated and was charging at people or objects around the campground, including earlier movements near other visitors.

Video captured the bison hooking the man with a horn near his hip and launching him, after which he landed heavily on his side. The grandson managed to run away. Bystanders shouted and rushed toward the bison, driving it off from the injured man.

Emergency personnel transported the tourist to a hospital. Injuries are described as significant, with one account saying the attack broke the man’s femur in multiple places, while others report severe hip and leg pain. The incident occurs during Yellowstone’s bison rut season, when bulls can be more aggressive, and park guidance advises maintaining at least 25 yards from bison.