Good food for er Spaniel dog (that helps avoid ear infections)?

Food allergies often manifest with chronic ear infections. Since your dog is not having chronic ear infections, your food choice is appropriate. If your dog begins to have ear infections, the first thing you will want to do is switch protein sources in your foods (i.e., if it's chicken, try lamb). You can also see reactions to the carbohydrate sources, artificial colorings, artificial flavorings, and artificial preservatives. By avoiding these from the start, you are less likely to see issues in the future.