Thank you very much for your advice and reply I apprecia justte it very much. Iam a new tegu owner Bruno blue is my first a tegu has been my dream pet for a long time now and I finally was in the position to purchase him but his enclosure I think is a good size for his age and size right now? He is about 19inches and is in a 75 gallon terrarium that is 4ft long and 2 feet wide this is just a temp enclosure until I build his permanent home? He never did this before it scared me because his top to his terrarium has a screen and when he tried to climb up his back toe got caught in the metal holes in the screen and ripped his nail off but I cleaned him up really good and wrapped his foot the best I could he's healed now but was wondering why he could be doing this? As for his temps his cool side is always at 80 and his warm side where he basks is at 105? As for his diet he gets a variety of food everyday he loves chicken breast and chicken gizzards and hearts and I bring him home swordfish from work sometimes he loves that as well he also gets his insects such as hornworms dubias and mealworms calci-worms and superworms and of course everything gets dusted with repticalicium with d3? But maybe he could be kind of bored ? What can I do to fix this for him if this is the case? He's super tame and chill now I can reach in an take him out whenever now ..wen I first got him this was not the case I have put in a lot of time an effort into my little baby boy when I first got him I could not get him out I really had to try but I was constant with him and now he is just the best we have gained each others trust ..it's just the trying to get out that worries me?Beautiful tegu. Could be for a variety of reasons. Enclosure is too warm, he's hungry, he's settled in and is now bored with perhaps a too small enclosure.