How and When to Switch From Puppy to Adult Dog Food

Watching your puppy grow is one of the most rewarding parts of pet parenthood from clumsy zoomies to confident tail wags. But as your pup matures, so do their nutritional needs. Puppy food is designed for growth and development, but continuing it too long can lead to weight issues and imbalanced nutrition. In this guide, we’ll walk you through when and how to make the switch to adult dog food, ensuring a smooth transition that keeps your canine companion happy, healthy, and thriving at every stage.

Why the Switch Matters

Puppies have different nutritional needs than adult dogs. Their food is specially formulated to support rapid growth, high energy, and developing bones. But once your pup matures, staying on puppy food for too long can lead to weight gain and other health issues. Transitioning at the right time ensures they get the balanced nutrition they need for adulthood.

When to Make the Switch

The right time depends on your dog’s breed and size:

Small breeds (under 20 lbs): 9–12 months

Medium breeds (20–50 lbs): 12 months

Large breeds (50–90+ lbs): 12–18 months

Giant breeds (over 90 lbs): up to 24 months

How to Transition Food Safely

Switching too quickly can upset your dog’s tummy. Follow this 7-day gradual transition:

Keep an eye out for loose stools or changes in appetite. Go slower if needed.

Choosing the Right Adult Dog Food

Look for a formula that’s:

 Specifically made for adult dogs

 High in quality protein

 Rich in nutrients but not too high in calories

Approved by vets and meets AAFCO guidelines

Need help picking the right one? Check out our top rated adult dog foods here.

 Signs Your Dog is Ready to Transition

Growth has slowed or stopped

Their body looks more filled out

They’ve lost interest in puppy food

Vet recommends it

 Final Tips 

✅ Don’t mix brands with drastically different formulas
✅ Keep fresh water available at all times
✅ Don’t forget treats and chews should also suit adult dogs!