Stock photography, photos: Large Bison on Grass Stock photos of A large bison (Bison bison) walks through short grass. Theodore Roosevelt National Park, North Dakota. Photograph: © Matthew Thalman Click for a larger image and more information Keywords associated with this stock photo: American Bison, animal, Bison bison, hoof, hooved, hooves, mammal, mammals, ruminant, ruminants, wildlife, America, National Park, National Parks, North America, North Dakota, NP, Theodore Roosevelt National Park, Theodore Roosevelt NP, United States, United States of America, US, USA