The Horned Ruminants
The family of Common Ruminants form a natural group comprehending the greatest number of Ruminants. The feature which distinguishes the animals composing it, not only from the Camel family, but also from all the other Ruminants, is the existence of two horns on the forehead of the male, and sometimes on the female.
The structure of these horns presents various differences, and has caused the division of this large and important family into three tribes, namely, Ruminants with hairy and permanent horns, hollow-horned Ruminants and Ruminants which shed their horns.