when I was going through the photos just now I thought... what is this, turtles? But no, it is one of the striped hyaena enclosures (there are two asleep inside the sort of rock den at front left). There were several enclosures designed like this for smaller mammals, and all would have been infinitely improved by having a glass or mesh front and doing away with the moat altogether because it just takes too much room away from the enclosure.
Read about my visit here:
http://www.zoochat.com/249/zoo-negara-visit-15-dec-2013-a-348984/