Wildebeests, also called gnus, are antelopes in the genus Connochaetes. They belong to the family Bovidae, which includes antelopes, cattle, goats, sheep, and other even-toed horned ungulates. Connochaetes includes two species, both native to Africa: the black wildebeest or white-tailed gnu (C. gnou), and the blue wildebeest and brindled gnu (C. taurinus). Fossil records suggest these two species diverged about one million years ago, resulting in a northern and a southern species. The blue wildebeest remained in its original range and changed very little from the ancestral species, while the black wildebeest changed more like an adaptation to its open grassland habitat in the south. The most obvious way of telling the two species apart are the differences in their coloring and in the way their horns are oriented.
The wildebeest appears in this episode. A group of Ornithomimus chase one of those antelope in the first third of the episode, exhausting it almost to death.
Allen releases the wildebeests in the African exhibits with ostriches and more.