“The bison in Yellowstone would be better described as initially two subpopulations of genetically distinct lineages that have become a single interbreeding population,” the study authors note ...

By the early 1900s, American bison numbers had been reduced by 99.9% across North America and only 23 wild bison were known ...

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 ...