i have a veiled chameleon and when i came home from school today i seen that he was crawling at the top of the tank and half of my artificail leaves and branch had been all knocked down. but what i am most concerned about is that he has a bruise looking spot on his stomach, i dont know if it was from the fall or somthing else is wrong with him. i am feeding him correctly and he is getting enough water and calcium. please give me your thoughts?

Yes, they can bruise from a fall or injury. If he is eating and acting normally, I'd just watch him closely for now. You can always have a herp vet check him out if you're worried!

CVT, also own a veiled/other reptiles