I've had my Tegu around 5 months. He's about 13 months old. When I first got him I was told he was aggressive, I didn't find that but no I'm second guessing myself and he finding his feet. He launches himself out of the Viv when I go to feed him or spray him with water. He used to let me touch him and hed happily sit on me but now he won't. Has anyone got any tips?