The Burgess Animal Book For Children in "Thunderfoot, Fleetfoot And Longcoat"

"And Happy Jack has the meaning right. It is the order to which all hoofed animals belong. There are several families in the order, one of which you already have learned about the Deer family. Now comes the family of Cattle and Sheep. It is called the Bovidae family, and the biggest and most important member is Thunderfoot the Bison, commonly called Buffalo.

"Thunderfoot is more closely related to Bossy, Farmer Brown's Cow, than are the members of the Deer family, for he has true horns, not antlers.