I have a cat who has put on a LOT of weight lately. She has been to the vet and is now on a low cal diet. However, because she has gotten so fat, she can only groom her sides...so she is going overboard and over grooming herself. She has actually licked all the hair off in a 6 in diameter circle. I've been applying bitter spray on it, but she continues to lick and chew. Any ideas? There is no infection, fungus, or any other irritation...it's simply a case of over grooming.