Behind the deer is a fenceline with shelter -- that is not the back of the enclosure. The extent of the enclosure is the top curve of the brown area (below the trees). There is also a lot of enclosure to either side of the photo -- it is huge!
For everything else at the zoo, see my review here:
http://www.zoochat.com/254/visit-assam-state-zoo-guwahati-10-a-358287/
