Hi!! I recently adopted two piggies and this is my first time with guinea pigs. One of them is long haired and she is going to need regular brushing but she hates to be fooled with. It strange but here lately she seems even more skittish than she was when I first got her (about a month and a half ago) during lap time she even jumps around when I try to pet her. Could this be a sign of a skin problem or discomfort?