My old Percy licked everything in sight for the last few years of her life, especially the carpet. Sometimes she just licked the air. It seemed like the worse her eyesight got, the more she licked. She didn't lick her skin raw, though she did lick herself a lot.

I didn't see it as behavior worth changing, because she was so old (she was 20 when she died). I never allow a dog to lick me, so as long as she didn't lick me, or certain pieces of furniture, I didn't care.

Karen