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My cat won't eat Royal Canin SO. Can I mix it with other cat food?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Male | neutered | 3 years and 8 months old | 14 lbs

Is it OK to mix royal canon SO with Muse(natural chicken, egg & pumpkin grain free) to get him to eat more SO. Three year old 14 lbs house cat, water intake good

1 Answer

Most Helpful Answer

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Answered By Dr. Strydom, DVM

Veterinarian

Published on November 17th, 2017

No, it is not really recommended you do that. He is on the Royal Canin SO due to an urinary issue (I am assuming) so if you add any other type of food in with it you are negating the effects of the prescription diet. The idea with the SO (or any other prescription urinary diet) is to keep the urine pH at a specific level to help decrease the chance of him making urinary crystals/stones. If you add another food into that, the pH will no longer be optimal. If he doesn't seem to like the Royal Canin SO, talk to your vet about trying a different brand of urinary diet. Other companies make comparable diets and some cats like those better. That being said, if he is not too fat or too thin, then he is likely eating enough. I'm assuming you have tried both the canned and dry versions of the SO? If not, then you can consider this as well. Some cats prefer canned food over dry and visa versa.

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