American bison, bison, buffalo, Bison bison, mammal, mammals, animals, animal, wildlife, fauna, ungulate, ungulates, grazer, hoofed mammal, hoofed mammals, hoofed, prairie, prairies, grasslands, plains, grassland, calf, calves, bison calf, herd, group, Yellowstone, Wyoming wildlife, family, mother, cow, baby, babies, young, North America, Yellowstone National Park, Wyoming, horizontal, USA, snow, snowing, snowstorm leesonphoto