He was also accused of kicking abisonin the leg and getting injured by the animal.
The car was tracked down, and the pair was slapped with a number of charges.
The incident continues to be investigated.
Yellowstone National Park is famed for being witness to similar incidents.
Last year, an Arizonawomanwalking through the wildlife park was gored by a bison who charged at her.
The man and his family reportedly got too close to the animal during the incident.
Wildlife in YellowstoneNational Parkare wild and can be dangerous when approached.
