» Blue bull redirects here. For the South African rugby union team, see Blue Bulls. The Nilgai (Boselaphus tragocamelus) is an antelope, and is one of the most commonly seen wild animals of central and northern India and eastern Pakistan; it's also present in parts of southern Nepal. The mature males appear ox-like and are also known as Blue bulls. The nilgai is the biggest Asian antelope. Description Nilgai stand 1.2-1.5 meters (4-5 feet) at the shoulder and are 1.8-2 meters (6-6.6 feet) long… (More on Nilgai)