One of the largest lizards I have every seen in the wild is this Asian Water Monitor. In the ancient runes of Wat Mahathat, they are all very common, but there are only a couple of lizards that were this large. I would put him at least 6 feet long end to end. They were all a little skittish for sure making me think that they might be hunted however, they are protected in Thailand. It was a treat to see so many doing so well.