Yesterday I took my b/w argentine tegu to the vet and they said she appeared to be healthy. Well tonight I took her out and she was fine and then I put her back in her enclosure. When I shut off her daytime lights and put her night time light on she started getting up and moving around. After five minutes or so her tail started to move just like a snake. I was wondering if anybody knew why she was doing this? Keep in mind when she was doing this when a moonlight bulb was on so it was prob. pitch black for her. PLEASE if you have any knowledge regarding this PLEASE RESPOND!