What do you do when you witness your house being broken into by a freakishly huge monitor lizard? Record the whole incident down of course. Attanai Thaiyuanwong was in for a rude surprise on Sunday when he arrived back at his home in Nonthaburi, Thailand, to find an unwelcome visitor trying to get into his house. The intruder was a giant monitor lizard, that looked as tall as an adult human, was standing upright on its hind legs with its mouth around the door knob.