american bison buffalo bull next to elk antler creek in the hayden valley in yellowstone national park usa

animal mammal wildlife bison american buffalo bull male water river elk antler creek hayden valley lamar yellowstone grand teton wind cave theodore roosevelt national park custer state black hills brown orange fur walking grazing native people tatanka tatonka grass grassland wild wilderness mountains nature horn west western wyoming idaho montana south dakota north united states usa america next creek river water