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Should I switch my overweight dog from Merrick to Royal Canin?

Updated On September 23rd, 2025

I am thinking about switching my dogs food to royal Cain. I have all 3 of my dogs on Merricks right now. One of my dogs is over weight

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on August 13th, 2018

Royal Canin is an excellent food, and I highly recommend it. I strongly urge the switch especially if the Merricks is grain free. There is a suspected link between grain free diets and an increase in dilated cardiomyopathy. The FDA is now investigating this link, and it looks like grain free diets are not good for dogs. Grains are good for dogs, and the grain free food is a fad. If you do switch food, you have to do it slowly to avoid GI upset. Start by mixing together 75% old food and 25% new food, and feed that for a couple of days. Then do 50% old and 50% new. Again feed for a couple of days, and then feed them 25% old and 75% old. After feeding that for another couple of days, you can feed them the new food only. In terms of your dog being overweight, feed according to the package instructions on the bag of food, no treats, and exercise daily. Best of luck, I hope this helps!

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