A visitor to Yellowstone National Park captured video of an elk that was trapped in a lake because it was surrounded by tourists.

A group of Yellowstone visitors have been criticized online after taking photos of a bear well within the recommended distance.

Researchers are looking into if the resident Yellowstone bison are actually one herd, not multiple. Scientists always believed that there had been more than one herd within the pa ...

Entombed at the Ashfall Fossil Beds State Historical Park, teeth from the rhino fossils were analyzed by researchers at the ...