With its bison population estimated at 5,300 as of August, Yellowstone bison manager Chris Geremia told the group park officials will “be using all tools to decrease" the herd.

An infuriating viral video shows a Yellowstone bison incredibly close to a tourist attempting to snap a selfie.

Yellowstone is home to several herds, with the Northern Yellowstone herd being the most famous and extensively studied elk population in North America. These elk migrate seasonally — spending winters ...