If a bison is displeased with you, it's not hard to tell. One tourist family learned this as they got too close to a bison calf and the elders let them know to back off.
Wyoming has seen its share of good Yellowstone Bison video, but this is amazing. I haven't seen anything like this since the stampede scene in Dances With Wolves.
Researchers are putting the embryos of Yellowstone Bison into female bison in Minnesota and other areas hoping for genetic diversity and to re-spread America's official animal.