When should my puppy switch to adult food? | Quick vet guide
2 Video Views·Aug 24, 2025
When to switch from a puppy to an adult dog diet depends on their breed and size — generally speaking, the bigger the breed, the later they'll switch to adult food. Dave the vet has the key tips, but if you're in doubt about anything you should speak to the team at your practice.
Comments are disabled for this video.
The right time for the switch from puppy to adult food depends on your puppy's breed.
Small breeds should switch around 7-9 months, while large and giant breeds often need to wait until 12-18 months.
Ask your vet if you're in any doubt.
Take it slow. Start by replacing about 25% of their puppy food with adult food.
Gradually increase the adult portion over about 7 days.
Changing too quickly can lead to tummy upsets.
A slow, gentle switch is best.
Pick an adult dog food that matches their size and lifestyle.
There are diets specially made for small breeds, large breeds and neutered dogs.
If you're unsure, your vet can help you choose.
A smooth switch means no vomiting, no diarrhoea and steady growth.
There also shouldn't be any notable changes to your puppy's appetite, energy levels and digestion.
If there's any trouble, slow things down and check in with your vet.
Ready to choose your puppy's first adult food?
Pet Health Club members get discounts on a range of trusted brands at our online shop,
making the switch easy and affordable.
Join today.