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Is changing my adult dog's food harmful? What brands are best?

Updated On September 23rd, 2025

Pet's info: Dog | Cockapoo | Male | neutered | 9 months and 3 days old | 20 lbs

Over the course of having my puppy, I’ve changed his food about 3-4 times, all high quality. Right now we’re on Fromm however when he becomes an adult in may, I’m thinking of changing him to a brand that I can purchase in chewy. More convenient. Which brands do you suggest on same high quality level? Also do you think it’s harmful to change his food. All times he’s never had diarrhea.

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on February 26th, 2019

Thank you for contacting PetCoach with your question about Bentley. It's not recommended to continually switch foods, but it's good he's never had diarrhea. If he is eating a Fromm food that isn't grain free, you can keep him on that. Should his food be grain free, I'd switch him to a food with grains. Vets are seeing an increase in dilated cardiomyopathy in dogs who are on grain free diets, and the FDA is currently investigating that link. It's quite concerning, and I don't recommend grain free diets for a dog's safety. Brands I recommend include Royal Canin, Hill's Science Diet, Purina ProPlan, and Iams. I feed my own dogs Iams, and they love it. I hope this helps! http://vetnutrition.tufts.edu/2018/06/a-broken-heart-risk-of-heart-disease-in-boutique-or-grain-free-diets-and-exotic-ingredients/

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