Footage shows a bison wreaking havoc on the road in Yellowstone National Park and nearly attacking a man on July 31, 2018.

The filmer said: "My family and I were driving through Hayden Valley in Yellowstone looking at wildlife and the scenery when we noticed that the traffic had slowed due to bison along the road. I videoed him from our vehicle as he was walking and making growling sounds. We noticed behind us, a man in socks and no shoes walking up the road towards the bison. He gestured to the animal to get off the road and then proceeded to challenge him. The bison went after him a couple of times and then carried on with what he was doing before he was bothered. The man did not appear to be injured and we are unsure of what happened to him after as we moved forward with traffic."

My family and I were driving through Hayden Valley in Yellowstone looking at wildlife and the scenery when we noticed that the traffic had slowed due to bison along the road. I videoed him from our vehicle as he was walking and making growling sounds. We noticed behind us, a man in socks and no shoes walking up the road towards the bison. He gestured to the animal to get off the road and then proceeded to challenge him. The bison went after him a couple times and then carried on with what he was doing before he was bothered. The man did not appear to be injured and we are unsure of what happened to him after as we moved forward with traffic.