A group of people visiting Yellowstone National Park's Lamar Valley were left with a hefty repair bill as a souvenir after one of the park's bison rammed their car, tearing a huge hole in the bonnet with its horns.
The visitors were waiting in stationary traffic while a herd of bison moved across the road, One of the car's occupants decided to record the animals passing close by, and captured the moment one large bull went on the attack.
