This little “cliff-springing” antelope might be likened to the chamois (Rupicapra rupicapra) or the mountain goat (Oreamnos americanus) in its mode of life among the rocks, where it makes rapid progress without apparent suitable footholds. It walks and stands on the tips of the relatively rounded hooves, and can jump onto a rocky projection the size of a silver dollar, landing on it with all four feet. It is crepuscular, being active mainly in the morning and late afternoon, sheltering at other times among rocks and under overhanging cliffs. Groups have exclusive home ranges, which are defended against conspecifics (individuals of the same species) and rarely left. Territories are larger in areas with low rainfall. Groups consist mainly of a mated, monogamous pair and their offspring of one or two years. The adult female initiates most group movements, but the male seems to be mainly responsible for defense. Generally, one member of the group stands at a point above the others and constantly watches for danger. When alarmed, it gives a loud, shrill whistle, and the animals ascend higher into the rocks. Both sexes scent mark the territory with secretions from the preorbital gland and by defecation.