It's hard to say what was going through the bison's mind, but one thing is clear: It had a beef, and it wasn't going to back down.
In a crazy video from Yellowstone Park, tourists driving an SUV are brought to a stop as several bison block the roadway. This is a normal occurrence in Yellowstone, where bison are numerous and roam free.
Fortunately, that SUV driver had a camera running.
According to a second video posted to YouTube, the damage caused by the bison totaled $2,787.82 -- "more than a dollar per pound of the 2,000 pound bison." Here's a video showing the aftermath: