It's really huge!! I visited this zoo thrice so far. First time was with friends, last 2 instances with family. The last time we took the bus and it was disappointing. it feels as if they are in a hurry to just finish the ride and drop you off, so you really cannot enjoy the beauty. There is so much to see and I feel the bus ride really do not do justice. However if you have people who cannot walk/ride bicycle then it may be your only option.. but now you know :).
Pros: Huge, vast bio-diversity, nice trees all over, inexpensive to get in, amazing Lion Safari.
Cons: Not enough food outlets, rest rooms are very dirty (though they are 'pay & use'). Overall the effort spent on maintenance must improve.
Best Part: DO NOT MISS THE LION SAFARI!! That's by far the key highlight.
Must Improve: If one is going to spend the whole day inside, the rest-rooms must be in a much better shape.