Baby bulls have different names in different regions of the world. A baby bull may be called a bull calf, a bullock, a young bull or simply a calf.
Calf is a technically correct name for a baby bull, since it applies to either gender. However, a variety of other terms have developed around the world. The term bullock is sometimes used in North America, but in the United Kingdom it means a castrated male bull of any age. The term bull calf is used all over the world. Dialects sometimes have unique names for calves in states of castration or partial castration.