In general the Rock Hyrax is similar to a tailless woodchuck. However, the similarities are only superficial. The soles of the feet are moist and rubberlike, giving the animal traction on smooth surfaces and steep slopes. There is a black dorsal patch which covers a gland that is exposed if the surrounding hairs are erected. Erection of these hairs is a demonstration of aggression.
Females have six mammae.
In spite of their rather heavy build, they are active and agile, running up steep, smooth rock surfaces with ease. The senses are keen, and they become quite shy when persecuted. When alarmed, they quickly dash into a rocky cranny or their own burrow. Although not large, they can put up a vigorous fight, biting savagely. Most of their lifestyle seems to be associated with a relatively poor thermoregulatory ability.