The American bison and the European bison (Wisent) are the largest surviving terrestrial animals in North America and Europe. Bison once roamed North America in herds of millions dominating prairie and forest ecosystems. Bison are good swimmers and can cross rivers over half a mile (800 meters) wide. They are nomadic grazers and travel in herds.
A white buffalo or white bison is an American bison possessing white fur, and is considered sacred or spiritually significant in several Native American religions