Add Yahoo as a preferred source to see more of our stories on Google. A herd of bison cows and calves in the Lamar Valley in Yellowstone National Park. (Photo by Diane Renkin/National Parks Service) ...

Prospective visitors to Yellowstone National Park are reminded that the bison rut is underway through August, and to treat the colossal beasts with extra caution. Everyone knows that bison are massive ...

They say you're always stronger in numbers, but this wolf pack learned the hard way that that's not always the case. Incredible footage taken at Yellowstone National Park by a group of tourists with ...