I used to live near a Crocodile breeding farm in Siem Reap.
There are very few wild crocodiles left in Cambodia, they have been hunted extensively.
Camera traps have spotted wild ones in the Cardamoms. Old fishermen will tell of times when they could find crocodiles in the Tonle Sap.
If you want to find out more about Cambodia’s wildlife, try OSMOSE, a conservation and ecotourism group.