I would also like to add on that many people mistake these animals as being "tame" because when their basic husbandry needs aren't met especially low temps, they become sluggish. I have had my Tegu for about 3 years now, and even after interacting with her almost everyday she still has her moods where she comes darting at me mouth open. She acts quite a bit more "wild" (if you want to call it that) than others I have seen, I tend to do more enrichment work with her vs trying to hold her in one place.