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; therefore, such buffalo are often visited for prayer and other religious rituals. The coats of buffalo are almost always brown and their skin a dark brown or black; however, white buffalo can result from one of several physical conditions: 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; therefore, such buffalo are often visited for prayer and other religious rituals. The coats of buffalo are almost always brown and their skin a dark brown or black; however, white buffalo can result from one of several physical conditions: White buffalo are extremely rare; the National Bison Association has estimated that they only occur in approximately one out of every 10 million births.