The Grey Rhebok or Grey Rhebuck (Pelea capreolus), is a species of antelope endemic to South Africa, Zimbabwe, Lesotho and Swaziland. They prefer grassy, mountainous habitat They are also known as the Vaal Rhebok or Vaalribbok.
Rheboks carry a woolly grey coat to insulate them from the cold of their habitat. Only the males carry the straight horns. Males become extremely aggressive during the breeding season.