Yea Idk either but I know it has alot to do with her shedding and with hogs it so hard to tell him there shedding cause my girls eyes dont blue up so i only know if she shedding by her belly cause it gets cloudy... But now with my other rtb if I started to mess with him he would hiss and hiss and hiss until i left the room and if I was in the room he would stike at the cage.. my bp has never once hissed so its weird.