Singapore Zoo is really a great place to visit. Lo...

Singapore Zoo is really a great place to visit. Lots of animals and very organized and clean. Timings are around 8:30-6pm.
The zoo area to cover can take even 6hrs if you are an animal lover. Lots to walk so carry a cap, Sunscreen and water. There are many shows which have certain timings do check them in advance and be there half an hr before to get decent seating. (bird, elephant show many others)
The night safari is worth the wait. Can see animals well and with good distance, there is a mini train which you take and that stops at many places in the zoo and then you can visit the animals in that area.