my corgi puppy is three months old. She is missing hair on top of her head around the ear area. She has also been have wax in her ears alot. I have to clean them out about every four days. When I took her to the vet she said she may have a food allergy and asked me what I was feeding her. I said Natural Ballance. This product is a all natural no grain product. If this food is doing this I'm not sure what to feed her? Has anyone else had this happen?