Allan Hathaway, a wildlife photographer, captured the video of the Wapiti wolf pack chasing after the lone bison in Yellowstone National Park.

Wolves versus cougars... adapting to survive alongside one another: A comprehensive series of articles on this topic ...

Footage shows part of a wolf-versus-elk pursuit that also has bison taking cover.

WARSAW, Poland (AP) — A pack of wolves in eastern Poland made a wrong choice of prey when it tried to attack a herd of bison, but was dismally chased away. An online camera installed by state forestry ...