My TJ does this in the middle of the night - He eats Raw Frozen Food, and no grains at all. So I don't believe he has a food allergy.
The Vet says he has OCD problems. I agree, b/c TJ can also go to town of my hubby's pillow and my hubby's scalp (weird, I know) - he just licks and licks, etc...
The nail biting pisses me off though. I get TJ's nail cut every 3 weeks, and it seems that he really seems to be more nail biting active just before that 3rd weekend, so maybe I have to go every 2 weeks.
Also, I have noticed that
if he happens to have 'pee' on his paws, he tends to lick them clean and then bite his nails if they are long enough. So now, in the middle of the night if I take him to pee, I stick his paws under the running water with a tiny bit of gentle shampoo and then just towel dry quickly. It's a pain in the a** - but it does seem to help
