Your puppy is changing in so many ways. In fact, the most rapid growth will take place in these first months of his life. His immune system is developing. Bones are growing. Muscles are getting stronger. All of this requires a nutrient-dense diet, formulated to support a medium-breed puppy's rate of development. To make sure your puppy is getting optimal nutrition to protect and maintain health and well-being, here are some key points to keep in mind.
From the time your puppy is weaned until 4 months of age, you should feed your puppy two to three meals a day, with the daily amount based on the guidelines of the food label. After 4 months of age, he should be fed twice a day on a regular schedule. Always have fresh water available.
Research shows that puppies need up to twice as much energy as adult dogs. Dramatic growth at this stage means your puppy requires an energy-rich, nutrient-dense complete and balanced diet. Puppies also require more protein than adult dogs. High-quality animal-based protein will help your puppy create new body tissue.
Not all puppies have the same nutritional needs. Medium-breed puppies actually have slightly higher metabolism rates per pound than large-breed puppies. And your puppy will reach his mature adult weight at about 12 months, sooner than larger breeds that reach adulthood as late as 24 months. Your puppy needs protein, fat, calcium, and phosphorus to support growth and development of bones, muscles, and other tissues. So giving him a food that supports his medium size is the easiest way to help make sure he's getting the right balance of nutrients for his metabolism and growth rate.
Remember, puppies have small stomachs. Make sure his food is nutrient-dense so he'll get a complete and balanced diet even though his stomach can only handle what seems like a small volume of food.
Aside from energy and protein, there are other important nutrients and ingredients vital to your puppy's diet:
These are important building blocks of nutrition. Look for them when you choose dry or canned dog food and when you select treats.
A medium-breed puppy reaches adult weight by about 12 months. You can begin feeding an adult dog food at this time, such as IAMS™ ProActive Health™ Adult MiniChunks. Your dog might not welcome the change at first, but don't worry. You can help ease the transition by gradually introducing the adult food. Try mixing 25% of the new food with 75% of his puppy food, then gradually change the proportions over the next three days until he's eating 100% adult food.

In the past, veterinarians recommended diets for senior dogs largely based on the nutritional management of diseases common to the aging process. Research, however, has shown that special nutrition can help manage body-condition problems in aging dogs, such as obesity and loss of muscle mass. Senior dogs also benefit from special nutrition to help maintain bone and joint health.
Learn more about how you can help your senior dog manage common health issues associated with aging.
Senior dogs tend to gain weight, despite consuming fewer calories, due to changes in their metabolic rate. Therefore, they can benefit from eating a diet with reduced fat levels and lower caloric density than adult maintenance foods.
Recent IAMS™ research in dogs also indicates that L-carnitine — a vitamin-like compound made in the body from the amino acids found in red meats, fish, chicken and milk — can help reduce weight in overweight dogs by escorting fat into cellular mitochondria where it is turned into energy.
Protein is the building block of muscle tissues. It is important for maintenance of muscle tissues, muscle strength and mobility. Recent research conducted by The IAMS Company has shown that senior dogs that eat a higher-protein diet better maintain muscle protein stores. By providing optimal protein levels from muscle maintenance, we can help senior dogs continue being physically active.
This research is contrary to conventional opinion that senior dog foods should contain lower protein levels than adult maintenance formulas to avoid progressive decrease in kidney function. However, senior dogs fed a high-protein diet had stable renal function and a lower death rate than dogs fed a lower-protein diet.*
During the aging process, cartilage between joints often begins deteriorating. Nutritional management can help maintain healthy bones and joints and mobility in dogs in several ways:
Some pet-food manufacturers have endorsed reduced levels of calcium and phosphorus based on the belief that excesses of these minerals are harmful to the kidneys. However, research has shown that no damaging accumulation of calcium or phosphorus was found in the kidneys of older dogs fed diets containing maintenance levels of calcium and phosphorus for four years.*
* Finco, DR. “Effects of aging and dietary protein intake of uninephrectomized geriatric dogs.” American Journal of Veterinary Research; Vol. 55, No. 9. Sept. 1994.
