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 ...

A herd of bisons were seen scratching an itch on trees at the Specimen Ridge area of Yellowstone National Park. “Everybody asks me how come the trees are all rubbed. This is why,” said Cindy Shaffer, ...