The term Cattalo is defined by United States law as a cross of bison and cattle which have a bison appearance; however, in Canada, cattalo is used for hybrids of all degrees and appearance. In the U.S., cattalo are regulated as "exotic animals" along with pure bison, elk, and deer. Beefalo are primarily cattle in genetics and appearance with the breed association defining a full beefalo as one with 3/8 bisongenetics while they call animals with higher percentages of bisongenetics as "bison hybrids".
