India, July 12 -- A tourist was injured after a bull bison attacked him and tossed him about eight feet into the air at Yellowstone National Park in the United States on Friday, media reports said.

The incident took place at the Bridge Bay Campground, south of Fishing Bridge, according to professional photographer Mike MacLeod from Bozeman, Montana, who witnessed the attack and spoke to Cowboy State Daily.

MacLeod said the man was walking with his grandson when the agitated bison suddenly charged at them.

"I was just trying to get some dramatic footage of that bison having a fit," MacLeod told Cowboy State Daily. "It's changed my idea of what to expect from these guys at this time of year, because I would not have predicted that happen...