The viral video from Colorado Instagram page @goodbullguided captures two massive bison smashing heads with incredible force in a stunning display.
https://www.foxnews.com/outkick-culture/wild-bison-headbutting-video-must-watch-crazy-nature-moment-going-viral-online
https://www.foxnews.com/outkick-culture/wild-bison-headbutting-video-must-watch-crazy-nature-moment-going-viral-online