Lately my ball has been not so friendly. She is about a year and a half old (give or take) and I've had her since a little before Xmas 2007. She has not tried to bite me but hisses whenever I try to pick her up. I ignore it when it's time to feed her, because, well she's gotta eat. Otherwise I'm kind of nervous to handle her. I never handle her a lot, as in I don't hold her every day but I generally reach my hand in there and at least stroke down her back for a period every day. It's the first ball I've had, so admit I don't know everything... but I did some reading before I got her and I thought for the most part I've been doing things right. Does anyone have any advice? I love her to death and want to make sure she's happy and healthy.