Author 'Gipsy34' (Id 186330 ) : The nilgai is one of the wild animals the most common in India. It is one of the largest antelopes in asia and the largest antelope of India. The word 'nilgai' means cow blue. The nilgai resembling very much to a cow, the word 'blue' comes from the coat of the animal is grey-blue in males and tan in females. Considered as a sacred animal in the hindu religion, it enjoys a certain tranquility.