The tail is carried erect, so the white undersurface is conspicuous. It is a browser. There have been reports that a number of such groups will combine to form a temporary aggregation of up to 30 animals. The family units remain within a defined home range throughout the year. The lead male is territorial, defending a part of the home range against intruding males.
Defense involves postural displays, snorting and stamping, and serious fighting.
Males that are unable to win or maintain a territory are frequently solitary. Generally one of the group acts as a sentinel while the others feed or rest. If danger appears, the sentinel gives a warning grunt or cough and leads the herd to more rugged country. Males are extraordinarily aggressive, often killing others of their sex during the rutting season and even attacking and killing sheep and goats. Mating takes place about April, and births occur about November or December, early in the warm, wet season.