A gnu, also known as a wildebeest, is a large African antelope belonging to the genus Connochaetes and the family Bovidae. There are two species of gnus: the common (or blue) wildebeest (Connochaetes taurinus) and the black wildebeest (Connochaetes gnou). These animals are native to Eastern and Southern Africa. Gnus are herbivores that primarily graze on grasses and succulent plants. They are large mammals with a shoulder height of about 4 to 4.5 feet, a length of 6 to 8 feet, and weigh between 265 to 550 pounds. They have distinctive features including a large, box-like head with curved horns, a mane similar to that of a horse, and a coat that can range in color from slate gray to dark brown. Both males and females have horns. Gnus are highly social and often form large herds. They play an important ecological role as dominant herbivores in the savanna and plains ecosystems of Africa. The term "gnu" comes from a Khoisan language, while "wildebeest" originates from South African Dutch meaning "wild beast." Both names refer to the same animals and are used interchangeably. In summary, a gnu is an antelope species commonly known as a wildebeest, recognized for its unique appearance and significant role in African ecosystems. They are large, grazing herbivores found mainly in the grasslands and savannas of Africa.