Bison jams are not uncommon in Yellowstone given their population at the park has ranged from 3,500 to nearly 6,000, the National Park Service says.

Bison in Yellowstone National Park may seem calm, but approaching them is extremely dangerous. Learn why these massive ...

Though the wolves might be outnumbered in Yellowstone, the canines have been known to hunt down bison. That being said, they ...

A cold morning mist lingers over the wide valleys of Yellowstone National Park as a mighty herd of bison rumbles across the ...

A herd of bison caused a "little bison jam" at Yellowstone National Park in Wyoming as the majestic animals crossed the road and held up traffic. Video footage shared by Cindy Shaffer shows a line ...