The state filed its lawsuit at the end of last year, arguing Montana’s concerns were not properly addressed in Yellowstone's ...

Although elk infected with brucellosis freely roam southwestern Montana and have been responsible for infecting cattle with the disease, “bison in Yellowstone present a much higher, much more ...

Yellowstone bison now breed as one interlinked population. Genetic studies show strong gene flow across all bison herds.

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.

As spring unfolds in Jackson Hole, Wyoming, nature enthusiasts were treated to a heartwarming sight: a grizzly bear family strolling through the sunny landscape. Photographer Nick Sulzer captured the ...

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 ... range from about 20 during the winter to an average of about 200 in ...

Thousands of tourists visit Cooke City, Montana, outside the Northeast Entrance to Yellowstone National Park. The local ...

Female bears with cubs usually don’t emerge from hibernation until May. But a lucky photographer got photos when one momma ...

Crows are known for their remarkable problem-solving skills, memory, and even tool use but are they the smartest birds in the world? This video explores the mind-blowing intelligence of these ...