The Steenbok couple mates for life, sharing the same territory, an area from .50 to 1 square kilometre. In this area, they will forage, find shelter and raise their young. Both male and female Steenbok will mark their area by either urinating or defecating around the boundary and then covering the area with sand, much like a cat. By covering it, the dung or urine is kept moist and the scent then lasts longer. They do this on a regular basis until it forms a visible border around their area.
Steenbok have a gestation period of about five and a half months and usually give birth at the start of the rainy season. Normally Steenbok have only one or on rare occasions two calves. The Steenbok keeps their young well hidden for the first two weeks of their lives.
Steenbok have the most predators because of their size. They are preyed on by caracals, servals, jackals and every other wild cat found in the Kruger National Park. The baby Steenbok is so small that it often falls prey to snakes, foxes and birds. The only defence a Steenbok has is to either hide or flee from the threat. When the Steenbok spots a predator it will first conceal itself in the long grass. And the, at the right moment, they will sprint away, often changing direction very sharply or suddenly which does give them a bit of an advantage.