May be contact AVA to find up more... Cheers...
http://www.ava.gov.sg/AnimalsPetSector/CITESEndangeredSpecies/
http://www.ava.gov.sg/NR/rdonlyres/1ED3D89F-2AF7-496E-BBFA-EB16CAE9B95C/20152/FACTSHEETIMPORTdoc.pdf
Below extracted from above link...
Keeping of illegal wildlife
Singapore does not allow the keeping of exotic pets such as reptiles, amphibians and primates as pets for the following reasons:
They may introduce and spread diseases to humans and domestic animals.
Collection of wild animals for trading will lead to ecosystem imbalance and threaten the survival of endangered species.
The welfare of the animals may be compromised due to reasons such as unsuitable living conditions, poor diet and pet owner's lack of knowledge of the proper care for the animal.
Singapore's biodiversity would be greatly affected if such exotic pets were released in the wild, as most of them are non-native.
If the animal escapes, it may cause nuisance, fear and trauma to the general public.
Some examples of exotic pets include star tortoises, iguanas, tarantulas, scorpions, snakes, salamanders, sugar gliders, hedgehogs, slow lorises, gibbons etc.