I got my tegu today he was acting really good but when i pet his head he lifts it up and when i pet his back he arches it idk what that behavior is but anyway my main concern is that he got settled in his enclosure and now when i open the door and put my hand in he charges at me and i dont want that can anyone give me advice to whats going on the guy i got him from said he was under for about 3 days so im thinking hibernation but yet now hes up also hes about a year if that helps and hes 2' long