I bought my son a male veiled chameleon for his 4th birthday as he’s chameleon mad. I’ve had him for a few days now and he’s about 3 months old. My problem is when I go to get him from his vivarium he runs away and goes to bite me. Now I worried If I false him to be handled he may become really aggressive as I’ve read you should let them come to you. He has come down to the glass once and when I opened the door he just climbed out onto my hand. But only the once. What is the best way to get a young veiled get used to being handled?