​NILGAI, or Nylghau (“blue bull”), the largest antelope (Boselaphus tragocamelus) found in India, where it represents the kudu and eland group of Agrica. Only the bulls have horns, and these are short and insignificant. The general colour of the old bulls is bluish grey, but younger bulls and rows are browner. The nilgai is about the size of a mule (see Antelope).