As your dog matures, his body functions change. He might have decreased immune-system function, deterioration of skin and coat quality, and more frequent intestinal problems. So it makes sense that what a mature dog eats might also need to change.
Throughout a dog's life, a process called peroxidation occurs. This is a normal process the body uses to destroy cells that outlive their usefulness and to kill germs and parasites, but this process also can destroy or damage healthy cells. As a dog ages, the damage caused by peroxidation accumulates and, in turn, increases the risk of certain problems such as infections.
Antioxidants are naturally occurring components in the body (but also can be acquired through diet). They help maintain overall health by neutralizing the peroxidation process of cellular molecules.
Research sponsored by IAMS™ found that dogs fed a diet rich in antioxidants such as vitamin E had improved immune responses and vaccine recognition. This might be especially important for mature/senior dogs, because IAMS research has found that, as dogs age, immune responses can decrease.
Eating a complete and balanced diet with omega-3 fatty acids, such as those found in vitamin-rich fish oils, also helps rejuvenate dry skin and develop a healthy, lustrous coat.
Aging dogs might have higher numbers of unfavorable bacteria and lower numbers of beneficial bacteria in their intestines, which can result in clinical signs of gastrointestinal problems (such as diarrhea). A diet with a moderately fermentable fiber source such as beet pulp can help maintain intestinal health. Beet pulp provides energy for the cells lining the intestine and promotes proper stool formation.
Different dogs show signs of aging at different times, and much of this variation is associated with size. Larger dogs generally appear mature/senior sooner than smaller dogs. The table below can show you when your dog should start a mature diet with a food such as IAMS ProActive Health™ Mature Adult.
Dog Weight and Transition to Mature/Senior Foods
| Weight Range | Age to Begin Transition |
|---|---|
| More than 90 lbs | 5 years |
| 51 to 90 lbs | 6 years |
| 21 to 50 lbs | 7 years |
| Up to 20 lbs | 7 years |
Whether your dog is a big sweetie, a big weirdo or a big athlete, here’s what you need to know about taking care of your big dog.
First, all big dogs start out as little dogs. But pretty soon they grow up — and so does their appetite, their toys, their dog bowls, the vet bill and their need for speed.
He started to grow.
And pretty soon
he was bigger than
the recliner.
Sometimes it can take more than two years for them to reach their full size.
And you won’t like to think about it too much, but their life spans are shorter, too: about 10 to 12 years.
No wonder
you'll let him push
you off the bed
at night.
If a large dog gets too much food as a pup, they’re at a higher risk of growing too quickly, which can cause joint trouble.
For large breeds, being overweight is especially problematic. All that extra weight can be a lot for the joints to carry around.
Keep your good old dog healthy by practicing portion control and feeding nutritious food like IAMS™ Mature Adult Large Breed.
How will she catch
a screaming
15-mile-an-hour
Frisbee in midair
if she has knee trouble.
Back in the day, large-breed dogs were especially energetic. They were working dogs, herders, hunters, cart pullers and people protectors.
Who are we to deny their evolution?
Make sure your dog gets exercise every day.
How do you accomplish this? Walk, walk and more walk. And add in some running, jumping, chasing, hiking, fetching, dog-park visiting, swimming and even agility courses.
Repeat this mantra:
'I am the alpha.'
When it comes to training, think of it this way: The bigger the dog, the harder it is to hide behavior problems. And if you can’t control your super-sized soulmate, they could inadvertently cause damage or hurt someone.
Living large is all
about biting the
wind and living
that sweet,
sweet life.





