Unlike larger-breed dogs that are considered mature at age 5, medium-breed dogs are usually called mature or senior at age 7. By this time, their nutritional requirements are changing. You can help keep your medium-breed dog active, happy and healthy with a specially formulated mature or senior diet that delivers highly digestible, enhanced nutrition.
Your dog might be aging in a number of ways. He may have a dull, dry coat and flaky skin, declining activity or weight gain, decreased immune system response, more frequent intestinal problems, joint stiffness and a loss of lean muscle mass. It’s true that a mature or senior dog generally needs fewer calories, but to address special mature or senior concerns, your dog still needs high-quality protein and carefully balanced nutrients.
What your medium-breed dog needs is a high-quality, balanced maintenance food formulated for his changing metabolism. Look for options with these age-essential dietary components:
These ingredients are the keys to mature or senior nutrition whether you feed dry or wet dog food or give your dog treats.
Older, less active dogs are prone to weight gain. Controlling your dog’s weight can help minimize health complications such as diabetes or joint stress. Your dog can benefit from a weight-control diet with these key characteristics:

A product code is a series of numbers and letters printed on the outer package of each product that a manufacturer produces to provide information about when the product was made.
As part of the product code, products manufactured by The IAMS™ Company include a 'Best Used By' date, or the date at which the product is no longer considered fresh and should no longer be sold. This date is expressed in “ddmmyy” and “ddmmmyy” formats (line 1 below).
The second line represents company internal information for use in traceability and inventory control (line 2).
Depending upon the production line, pouch products might have code date information in a single or double line.
By recognizing and understanding these codes, customers can make sure they are receiving a fresh product.
Shelf life is the duration, measured in months, during which a product that is stored properly maintains its freshness. This means that if a product has a 16-month shelf life, it is fresh for up to 16 months from the date of manufacture.
The shelf life for our dry dog and cat foods is 16 months. All canned and pouch formulas have a shelf life of 24 months. Biscuits have a 12-month shelf life, and sauce formulas have a 16-month shelf life.
Unopened dry products are best stored off of the floor in a cool, dry place. Open bags of food should be stored in a clean, dry container with a tight seal. Dry products also might be frozen without loss of nutrients.
Opened wet products are best kept refrigerated in tightly sealed containers for no more than three days after the can has been opened. Wet products should not be frozen in unopened cans or pouches. However, wet foods can be frozen if removed from the container, packed in freezer containers and frozen immediately.