The bison fell into the 160-degree Grand Prismatic Spring. An eyewitness calls the ordeal a reminder of ”the circle of life.“ ...

The accompanying footage, captured Monday via the park’s livestream camera, shows several bison driving a grizzly bear from its cozy hangout in the Old Faithful/Upper Geyser Basin area.

According to the U.S. Geological Survey, "over the history of the National Park, dating back to 1872, 2 people have been killed as a result of bison encounters and 8 from bear encounters ...

There’s not a grizzly bear in Yellowstone National Park that is willing to mess with a bison herd on full alert. The accompanying footage, captured Monday via the park’s livestream camera ...