Hippopotamus Saves Wildebeest From Crocodile

The wildebeest (/ˈwɪldəbiːst/ wil-də-beest or /ˈvɪl-/ vil-, plural wildebeest or wildebeests, wildebeesties (juv)), also called the gnu (/ˈnuː/ noo or /ˈnjuː/ new) is an antelope of the genus Connochaetes. Wildebeest is Dutch for "wild beast" or "wild cattle" in Afrikaans (bees = cattle), while Connochaetes derives from the Greek words κόννος, kónnos, "beard", and χαίτη, khaítē, "flowing hair", "mane". The name "gnu" originates from the Khoikhoi name for these animals, t'gnu.
Taxonomy and evolution
The wildebeest, or the genus Connochaetes, is placed under family Bovidae and subfamily Alcelaphinae. The name Connochaetes was given by German zoologist Martin Hinrich Carl Lichtenstein in 1814. Wildebeest were first discovered about 1700 by Dutch settlers on their way to the interior of South Africa. Due to their resemblance to wild cattle, these people called them "wild ox" or "wildebeest". The black wildebeest was first known to westerners in the northern part of South Africa a century later, in the 1800s.