American Bison, Animal, Bison, Bison bison, Bison bison bison, Bison sp, Bovid, Bovidae, Color Photograph, Competition, Day, Even-toed Ungulate, Fighting, Horizontal, Male, Mammal, Montana, National Park, Near Threatened, Near Threatened Species, Nobody, North America, Outdoors, Plains Bison, Side View, Snow, Sub-adult, Two Animals, U.S. National Park, USA, Ungulate, United States, United States of America, Waist Up, Wildlife, Winter, Yellowstone National Park