So I am a new owner of a Veiled Chameleon his name is Nismo and I noticed yesterday he was hanging upside down or anyway he could to attack his tail. At first it didn’t freak me out I thought maybe he was shedding (I haven’t seen this yet) I have only had him for a month bought him from Petsmart. Now today I come home from work and he’s attacking his tail till bleeding and the tip of his tail is black (now about an inch long.) So trying to be wise yet I know I’m not at this point. (Being new to chameleons) I turned his lights off so maybe he would stop he did for a bit then went back at it then stopped and went to sleep. I’m worried thought I’m trying to make sure he survives the night. So I’m not sure how old he is he’s about Nose to tail 8” long. His diet includes gut loaded crickets (fluckers high-calcium cricket diet, fluckers cricket quencher, plus organic fruits and veggies.) I lightly dust crickets once a day (morning) with Repti calcium without calcium then feed (night) non dusted crickets or super worms. Once a week I feed repti calcium with d3 and zoo med reptivite. He has a manual dripper but also has an auto mister system that drips for 12 seconds every 2 hours until sleepy time. Heat stays at 86 degrees in basking area. If you see anything wrong please help.