Bison fight by crashing their heads or horns together. Both male and female bison have short, curved, black horns, which can grow to two feet (0.6 meters) long.

How do you tell a male from a female bison?

How do you tell male from female bison? A bull's head is wider and shaped more like a triangle than the female bison; its “forehead” fur is much thicker, as is the fur on its forelegs; and its beard is thicker. A cow's horns are slightly more curved and slender than a bull's.

Do bison calves have horns?

Both bison bulls and cows have horns. The horns on display are actually a hollow cap which grows over a bone-like core. ... While the open end of the horn-cap is hollow, the pointed end is solid.