It’s an animal-eat-animal world out there, especially in Yellowstone National Park. There are almost 70 different mammal species in Yellowstone, and most of those can be separated into two categories: ...

Allan Hathaway, a wildlife photographer, captured the video of the Wapiti wolf pack chasing after the lone bison in Yellowstone National Park.

A new study finds free roaming bison in Yellowstone National Park are reshaping the ecosystem. They have had a positive effect on grasses and soil, but some changes may not be for the better. A couple ...

In Yellowstone National Park, bison aren't just iconic wildlife; they're quiet ecosystem engineers. Once nearly wiped out, these massive grazers are now reshaping entire landscapes in ways scientists ...

Across Montana’s eastern plains, few sights register as strongly as a bison herd navigating open grassland. Although the grizzly bear is the official state animal, the plains bison has come to ...

A couple hundred years ago, the American heartland was home to massive herds of migrating bison - tens of millions of them crossing the plains, their hoofs sounding like distant thunder. Today, the ...