Did you know that you can get a ticket for the three zoo locations in Singapore cheaper?
I inquired for a tour to Night Safari, Jurong Bird Park and Singapore Zoo and found out that these three locations can be in one package. This is what they call the Park Hoppers. All I need to spend is S$68.00 and I can save S$12.00 (P399). With this budget, I can ride the Panorail or Tram Rides.
Check these zoo official sites as your guide.
Have a Glance of the Singapore Zoo.