Blackbuck

Males are larger than females. The tail is short and compressed. Both sexes are white on the belly, around the eyes and on the inside of the legs. They differ in the coloration of the head and back. Female and young blackbucks are yellowish-fawn coloured on the back and on the outside of the limbs; the lower parts are white. The two colours are sharply divided by a distinct pale lateral band. Old male bucks are blackish brown on the back, on the sides and front of the neck. They become almost black with age, only the nape remains brownish rufous, and the pale lateral band disappears. Only males have horns that are diverging, cylindrical, spiral, and ringed throughout.