I've had the same cats for years but suddenly one of them is getting chewed up and I have no idea who the culprit is... she has one cut on her head and several under her chin which she keeps licking... I've heard that I should put superglue on them to seal them... anyone know if this is the correct thing to do? She's usually the aggressor with one of the other cats but this is the first time there's been any evidence of "hurt"...