These shaggy animals are part of the sheep, goat, and cattle family. Bison are the largest living land mammal in North America. Most of their weight is in the front. They have huge heads. They have dark brown hair between their curving horns.
Bison are mainly brownish-black.
They are covered with a thick 'blanket' fur. The bison have short legs. Bison herds can run over 30 miles an hour. Bison are about six feet tall. The male is larger than the female.