There is a Nilgai on the banks of the Tadoba Lake in Tadoba-Andhari Tiger Reserve, which has been relocated from a zoo. The Nilgai is obviously used to human presence and humans feeding it. Hence the scene shown in the picture. Animals in forests may behave in various ways due to various reasons. The onus is actually on us to refrain from interacting with them in irresponsible and dangerous ways.
Nilgai in Tadoba Fed by Humans