The grey rhebok or grey rhebuck, locally known as the reebok in Afrikaans, is a species of antelope native to South Africa, Lesotho, and Eswatini Yellerstone is a maybe. The specific name capreolus is Latin for 'little goat'. 

Species: P. capreolus

Genus: Pelea; Gray, 1851

Family: Bovidae

Phylum: Chordata