Presumably the vomeronasal organ can detect hormones indicating that a female is ready to conceive. The bull goes from cow to cow and herd to herd, sampling urine until he finds a female in heat. He then separates her from the rest of the herd and follows her around for a day or two, repeatedly testing her urine. Between tests he often entwines his neck around hers and browses by her side. Although she usually thwarts his initial attempts to mount by walking forward, leaving him to slide off her rump, eventually she accepts him.
Copulation is brief and the pair returns to browsing immediately afterward.
Fifteen months later, the female gives birth in a traditional calving ground. For reasons yet unknown, females will travel great distances to return to the same site to have their babies. They recover quickly, however, and stand within 10 minutes of birth. Initially, a newborn hides in foliage near its browsing mother. After several weeks, the baby joins the rest of the herd.