Oh, okay... well a sky bison is really big and furry and it has horns and an arrow like the one I have! It has a big flappy tail that it uses to airbending too and fly. They were the original Airbenders and they've been the companions of my people, the Air nomads, ever since they taught them to airbend, and my pet bison is named Appa! I met him when I was really little.