Commonly seen wildlife is chital, sambar, nilgai, wild boar, and jackal. The main herbivores of Gir are chital, nilgai, sambar, four-horned antelope, chinkara and wild boar. It is home for a wide range of wildlife including chital and nilgai. Chital, sambar, nilgai and wild pigs are found all over the Tiger Reserve. The sambar deer and nilgai in Nepal have similar dietary preferences. Other ungulates present include blackbuck, hog deer and nilgai. Though the extant nilgai females lack horns, historic relatives of the antelope had horned females. Leopards prey on the nilgai, though they prefer smaller prey. The nilgai is the largest antelope in Asia. It is related to the modern nilgai and four-horned antelope. Some blackbucks are killed illegally especially where the species is sympatric with nilgai. Tribes such as the Bishnois traditionally take care of wild animals like the nilgai. In Bihar, authorities have classified the nilgai as vermin. The nilgai is rarely consumed by Hindus due to its religious significance. The nilgai is diurnal (active mainly during the day).