Monitor lizard, Singapore

I'm pretty sure this is a clouded monitor lizard (Varanus nebulous) although it could be Varanus salvator. He was about 3 feet long (call it a meter) which means he could grow another foot or so -- not my typical subject! Monitors can be aggressive feeders -- I've seen them lunge into water trying to grab a fish (and have the photos) and they will scavenge dead animals. This one was flicking out is tongue as he moved through the leaf litter. Got him with a friend's Nikon 70-200 so not my usual gear.