a blue bull, or nilgai antelope, doing his business!

animal antelope asia asian bharatpur blue boselaphus bovine bull cattle deer defecate ecology ecosystem environment exotic faeces feces game gazelle green habitat herbivore horns hot humid india keoladeo large largest mammal national natural nature nilgai nilgau one park prey rajasthan species toilet tragocamelus tropical tropics ungulate wild wildlife young zoo zoology