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:

Congratulations! You're the proud owner of a puppy. It's important to take steps now to ensure great puppy health. Louise Murray, DVM, director of the ASPCA's Bergh Memorial Animal Hospital in New York City and author of Vet Confidential (Ballantine, 2008), offers these pointers for your puppy's first year.
Talk to friends to find a veterinarian you can trust. Within a week of bringing your puppy home, take him for a checkup. The doctor will perform a physical and start keeping a detailed medical history.
The overvaccination of pets is currently a hot topic, Murray says. The question is, however, not whether to vaccinate but which vaccines to use and how often. What she calls the 'core vaccines'—those for parvovirus, distemper, adenovirus type 2, and rabies—are essential. 'These shots protect your dog from diseases that are very real, very common, and very dangerous,' she says. Additional vaccines may be necessary based on where you live, where you take your dog, and whether you travel.
Choose a reputable brand of dog food and discuss your choice with your veterinarian. In his first year, your puppy will be on food that is specifically geared toward younger dogs and will likely eat three times a day rather than once or twice.
An excellent measure against pet overpopulation, this procedure ideally should be performed between ages 4 and 5 months, which is before a female dog goes into her first heat and before a male enters puberty. A female dog who is spayed before going into heat is 2,000 times less likely to get breast cancer, Murray says. Males who are neutered before entering puberty have fewer behavioral issues, such as aggression toward other dogs and urine marking.
Puppy Health: Flea, Tick, and Heartworm Medicines
Most dogs should be on medicine year-round to prevent heartworm, a life-threatening parasitic infestation, Murray says. Fleas, often seen as just an annoyance, can actually cause severe skin problems and even anemia. Ticks carry multiple diseases (including Lyme disease and Rocky Mountain Spotted Fever). Your veterinarian can prescribe effective preventives for these two problems.