Question: Which large mammal that appears in the engraving for the Wildebeest Kuil Rock Art Centre, is one of any five extant species of odd-toed ungulates in the family Rhinocerotidae?
Sentence (from "Equus (genus)"): All species are herbivorous, and mostly grazers with simpler digestive systems than ruminants but able to subsist on lower quality vegetation.
Relevant evidence: No