My 1yr old spayed female Domestic cat likes to lick the end of my nose & then bites it quite hard. I'd like to know why she has to bite it too. It really hurts & makes me not want her around my face. I enjoy our bonding sessions since she seems to enjoy it & purrs ever so loudly while looking into my eyes. She is almost all white with blue eyes & has two strokes of brown fur around the crown of her head around her ears. Like a van gene would have. Any advise on this behavior would be appreciated my me & my sore nose.