hi everyone im hoping one of you will have some advice. i am concerned about my white oak ratsnake. when i got him from a rehoming centre he was very timid and not used to being handled but seemed to be settling in and doing ok, getting more sociable etc. however now he is very aggressive and has tried to bite frequently and is also refusing to feed which is very unusual. i should add i fed him a chick last week however he did eat a mouse afterwards but this time took the chick and not the mouse. can anyone help? also he keeps opening his mouth and nose rubbing. im very concerned. PLEASE HELP!