american bison buffalo bull sniffing the air in hayden valley in yellowstone national park united states

animal mammal wildlife zoo bison american buffalo bull male smelling sniffing hayden valley lamar yellowstone river 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 air river water