When to Switch to Adult Dog Food

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when to switch to adult food

When your puppy’s growth in height slows, you should begin switching to a premium adult–formula dog food. This usually occurs around 9 to 12 months for small breeds, around 12 months for medium breeds and around 12 to 24 months for large breeds.


When your puppy is ready to switch to adult dog food, choose the same brand adult food you fed her as a puppy. Doing so will ensure she gets the same benefits as she did from her puppy food and make the transition easier.

A gradual switch over a period of four days helps minimize intestinal upset. This same gradual switching of formulas should be done any time you change your dog's food.

Here’s a simple four–day guide to help make the switch to adult dog food as seamless as possible:

  • Day 1: Fill your dog's bowl with approximately 75% puppy food, 25% adult food .
  • Day 2: Fill your dog's bowl with approximately 50% puppy food, 50% adult food.
  • Day 3: Fill your dog's bowl with approximately 25% puppy food, 75% adult food.
  • Day 4: Fill your dog's bowl with 100% adult food.

If your puppy doesn’t seem to be transitioning to the new dog food, consider switching the formula type (from chicken to salmon or lamb, or vice versa). Try to avoid reverting back to the puppy formula. If this doesn’t seem to be effective, EUKANUBA™ has an array of high–quality adult dog food options so you can find the right formula for your dog. If you have additional questions about formula types, consult your vet for guidance.