The label can reveal other important information besides the ingredients. Check for a “best by” date. Most naturally preserved dry foods have a “best by” date that is 12 months from the date of manufacture.
Try to find a bag that is as fresh as possible. If yours is a one-dog household and your budget can tolerate the price differential, shop for smaller-sized bags, which make it easier to keep the food fresh. Also, look for bags lined with untreated aluminum foil. Do not remove the food from the bag, but rather, store the bag inside an airtight, metal container.
If you feed your dog canned food and don’t use an entire can in one meal, store the leftovers in the refrigerator in a covered container. Food left in an opened can (even one with a plastic lid) loses flavor.
Dogs thrive on variety. As Bren points out, “Some animal nutritionists recommend switching among two or three different petfood products every few months. Doing so helps ensure that a deficiency doesn’t develop for some as-yet-unknown nutrient required for good health. When changing pet foods, add the new food to the old gradually for a few days to avoid upsetting the pet’s digestive system.”
If you are adding fresh or cooked ingredients to the meal (which many recommend), make sure you adjust the amount of commercial food to avoid overfeeding and weight gain.
When in doubt, shop at small boutique or holistic pet stores. The owners and staff are usually more familiar with their products and can help you with your buying decisions.
Make sure you contact the food manufacturer if you have any questions about their products, either before or after buying it. Do not simply rely on the information from their websites.