Ключевые слова: america, american, animal, animals, big, bison, bridger, buffalo, bull, coat, eat, field, fight, fur, grass, grassland, grazing, green, herd, landscape, large, mammal, meadow, national, native, natural, nature, north, np, outdoor, park, pasture, pine, plains, plant, prairie, states, summer, teton, travel, tree, united, usa, wild, wilderness, wildlife, wyoming, yellowstone,