Ok, heres the deal. Deuce has been getting little spots where his hair is real thin. One under his ear, a tiny one on his back, and one under the outside corner of each eye. Is this just b/c he is shedding, is it an allergy, bad food, or what? It isn't bald completely, just really thin, and it isn't irritated or red. Any guess or advice would be helpful. We have been giving him Authority Harvest Baked, but are switching to Royal Canin, but I noticed it before we began the food switch.