A video taken in Yellowstone National Park shows a lone female wolf competing with two grizzly bears for the rights to a ...

A herd of bison gorged on fresh green grass while roaming Mammoth, Wyoming on the northwest edge of Yellowstone National Park ...

A herd of bison gorged on fresh green grass while roaming the town of Mammoth, Wyoming, on the northwest edge of Yellowstone National Park, on Tuesday, April 29.Video from local resident Cindy Shaffer ...

Yellowstone National Park's 1973 job posting for a winter keeper wasn't for the weak. Applicants had to be willing to live in ...