Quetzal never balls for me anymore, have had him almost two months now. He did for the first days after his first feeding with me, so I guess days 6-10, after that he seemed to realize I was much too concerned that I would hurt him to think he was a tasty snack He's tagged me once, came home from taking my sister's dogs for a walk and must have still smelled a little too much like dog as he was not having any of it until I rescrubbed my hands up to my elbows and changed my shirt. Otherwise when I startle him or if he's not interested in coming out, he'll push a single coil over his head and pout. I got him at 5mos so I don't know how he was as a littling, but he's been rather laidback the entire time I've had him.