If you just brought home a new puppy or are thinking about getting one, you're likely flooded with excitement — and some lingering questions as you look forward to your future together. For example, you might wonder: When can I feed puppies food for adult dogs? Can puppies eat adult dog food?
While some dog foods are labeled "for all life stages," veterinarians know puppies have different nutritional needs than adult dogs. To create a strong foundation for a lifetime of health, it's important to feed your puppy dog food that supports their growth at this life stage. Read on to learn about puppy nutrition basics, when to switch a puppy to adult dog food, and how to choose the best food for your puppy.
Puppy Nutrition 101: Can Puppies Eat Adult Dog Food?
During the first year of life (and longer in large and giant breed dogs), puppies grow rapidly. Their bones get longer, their brain develops and they grow new coats. The purpose of nutrition while a puppy is growing into an adult dog is twofold: to support day-to-day life and rapid full-body growth. So, puppy and adult dog foods serve different purposes. Adult food supports healthy maintenance, while puppy food supports healthy maintenance and growth.

What Makes Puppy Food Different
The following factors distinguish puppy food from adult dog food:
Increased calories
Increased protein and fat
Higher calcium levels to support healthy bones and teeth
Higher DHA levels to support brain development
It's important to feed your puppy the right food while they're growing to ensure they get all the necessary nutrients in the proper amounts. While all puppies can thrive on food specially formulated for growth and development, it's even more critical for large breed puppies, who may require a large breed puppy food. Large breed puppies need to consume an appropriate balance of minerals, including calcium and phosphorus, to support correct skeletal growth and reduce the risk of certain joint disorders, such as hip dysplasia.
When Can I Feed Puppies Food for Adult Dogs?
Because puppy food is higher in calories and fat, feeding it to dogs who are done growing can cause unhealthy weight gain. However, there's no one-size-fits-all guide to the right time to transition from puppy food to adult dog food, so check with your vet. When to switch from puppy food depends on several factors, including breed, size, spay/neuter status and activity level.
For example, if you have a Maltese puppy who isn't very active and was neutered at 8 months, your veterinarian may recommend you switch to adult food around 9 months of age. If you have a Saint Bernard who won't be spayed until she's 18 months, your vet will likely advise you to keep her on puppy food until she's done growing, which can take 18 to 24 months.
