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Should adult cats eat kitten food? Can it cause bladder problems?

Updated on September 23rd, 2025

Pet's info: Cat | Siamese | Female | spayed | 1 year and 11 months old | 10 lbs

Will 40% protein dry kitten food in addition to 20% wet food,about half and half, hurt my soon to be 2yr old kitty? I feed her Blue Buffalo Brand Foods. I’m trying to feed her food without ash. My late kitty had bladder stones from ash. After his surgery I fed him Prescription Science Diet. I don’t want my current kitty to get stones, as well. But, I want to feed her the best food possible.

1 Answer

Most Helpful Answer

Dr. Melanie, BVSc MS

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on October 16th, 2018

Because Bleu is an adult cat, she does not need a kitten food. Kitten food should only be fed to cats less than a year of age. This is because kitten food has more calories, protein, and calcium to support their rapid growth, but as adults, they won't grow anymore and thus do not need as many calories as a kitten. I would get her an adult cat food. Brands I recommend include Royal Canin, Hill's Science Diet, Purina ProPlan, and Iams. Best of luck, I hope this helps!
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