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Being a pet parent can be confusing. You know you want to do the best for your puppy, but this can raise all kinds of questions. You might wonder if a puppy can eat adult dog food(spoiler alert: no) or how long a puppy should eat puppy food. In this guide, we’ll answer those questions and look into when to switch from puppy to dog food and how to make sure that transition goes smoothly.
You can start giving your puppy adult food as soon as they’re physically mature. Your dog’s size and breed type will affect how old they are when this happens, and they could be anywhere between 9-24 months of age.
Small-breed dogs mature much faster than large-breed ones (with medium breed dogs being somewhere in the middle). Neutering will speed up this process, which causes their metabolism to slow down. This means a neutered puppy should be fed slightly less than a puppy that hasn’t been neutered, as they could put on weight.
Below is a guide that will give you a rough idea of when you can expect to switch from puppy to adult dog food. But remember, “guide” is the key word here. Every dog is a unique individual and will hit physical maturity in their own time. So, if you’re not 100% sure, just have a chat with your vet. This can be especially helpful if your dog is a mixed breed and you’re not sure how big they’ll be to be considered fully grown.
| Breed Size | Approximate Adult Weight | Age to Transition to Adult Food |
|---|---|---|
| Small-breed dogs | Weighs approx. 9kg | 9-12 months |
| Medium-breed dogs | Weighs approx. 18kg | 12-14 months |
| Large-breed dogs | Weighs approx. 22kg | 12-24 months |
When it comes to transitioning your little puppy from puppy starter food to regular dog food, we recommend taking things slowly. Transition your puppy to regular food within 7-10 days. This gives your puppy’s digestive system time to adjust and helps to prevent an upset stomach.
To do this, simply add in a little more of the new food into the old food every day for about 7-10 days. Here’s how you’ll do it:
As they grow, you’ll also need to think about changing how often you feed them. Puppies have very small tummies and use up lots of energy, which means they need several small meals a day. Adult dogs, by contrast, can be given just a 2-3 meals a day.

It’s best not to give a puppy adult dog food because their nutritional needs are very different to those of a fully grown dog and the amount they can eat is limited. A puppy has lots of growing and developing to do, so they need a nutrient and calorie-rich diet that supports that.
Puppy food and adult dog food are very different things. For a start, puppy food is much higher in calories which help with growth and development. It also contains the nutrients a puppy needs for everything from healthy eyesight to strong bones and teeth. Feeding your puppy adult dog food is robbing them of important nutrients and could adversely affect their development.
Feeding them a specially formulated puppy food means you can be confident they’re getting everything they need to grow into healthy, happy adult dogs. With PEDIGREE® puppy food, you have the added reassurance of knowing that 50 years of research has gone into creating food with the ideal ratio of protein, fats, carbohydrates, minerals and vitamins. We’ve also made sure it’s easy for young tummies to digest.
If you’ve got a puppy, you’ll no doubt be training them, and that will almost certainly involve a few treats! PEDIGREE® Tasty Bites are specially created for puppies. Do remember to factor treats into your puppy’s daily calorie allowance though. It’s all too easy to dish out too many treats, especially when you have a ‘very good boy’.
Making the switch from puppy food to adult dog food is an important milestone in your pup's life. By timing the transition to match your dog's physical maturity and taking it slowly over 7-10 days, you can set them up for a lifetime of healthy eating. When in doubt, your vet is always the best person to guide you. After all, every dog is different, and they all deserve the very best start in life.
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Puppies have different nutritional needs than adult dogs to support their growth and development. Puppy food is specially formulated with the nutrients and energy growing dogs need until they're ready to transition to an adult diet. So, it’s best to avoid offering your puppies adult food until the transition phase.
The right time to switch your puppy to adult dog food depends on their breed and size, as different dogs reach maturity at different ages. Once your puppy reaches adulthood, gradually transition to adult dog food over 7–10 days by slowly increasing the amount of adult food while reducing their puppy food.
Yes, you can mix puppy and adult food during the transition period to help your puppy adjust to their new diet.