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:

Protein is best known for supplying amino acids to build hair, skin, nails, muscles, tendons, ligaments, and cartilage. It also plays a main role in hormone production.
The protein in dog foods can be supplied by animal sources, plant sources or a combination of the two. High-quality animal-source proteins contain all of the essential amino acids dogs need, while a single plant-based protein might not contain adequate amounts of some essential amino acids.
Common animal-based protein sources used in pet food include chicken, lamb, fish, and beef.
Even though they are often fed plant-based diets, dogs are not herbivores. While dogs are technically considered to be omnivores—animals that eat both animal- and plant-based foods—they should be treated primarily as carnivores to better fulfill their specific nutritional requirements.
Dogs are members of the Canidae family. This family also includes the wolf, coyote, fox, and jackal. The ancestors and relatives of today's common dog hunted animals and ate them as a means of survival.
The body structure of domestic dogs is similar to that of their ancestors and relatives and is ideal for eating prey. Dogs have the enlarged carnassial teeth after which carnivores are named. Their gastrointestinal tract is simple and does not have the capacity to digest large amounts of plant products.
Animal-based proteins help dogs achieve optimal health.