The Blue Wildebeest (Connochaetes taurinus), also called the Common Wildebeest, is a large antelope and one of two species of wildebeest. It grows to 115–145 cm shoulder height and attains a body mass of 168–274 kg. They range the open plains, bushveld and dry woodlands of Southern and East Africa, realizing a life span in excess of twenty years. This herbivore is a grazing animal that is often sighted in open grasslands or clearings in a savanna. The male is highly territorial using scent markings and other devices to protect his domain. The largest population is in the Serengeti, numbering over one million animals.