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My senior cat is losing weight. How to help her gain weight on a urinary diet?

Updated On September 23rd, 2025

Pet's info: Cat | Mixed Breed | Female | spayed | 12 years and 10 months old | 6.3 lbs

My cat has had Royal Canin Urinary SO normal calorie dry food for past 8 years after getting struvite stone surgery. In last 6mo. she has gone from 8lb to 6.3lb. vet says it's because she hasn't been eating well and leukemia virus, thyroid, CBC, kidney fox were normal. She started on SO wet food but only eats a little (<1can/day + Little of ad lib dry). We tried blue wilderness wet salmon food for higher protein (sarcopenia bc low protein in SO diet.) Will this help her gain/maintain weight?

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on November 26th, 2018

Adding in the wet food while providing her regular dry diet available as much as she wants should help increase her calorie count some. It is common for cats to start to lose weight as they age as their nutritional needs tend to change when they hit their senior years, plus absorption of nutrients overall tends to decrease with age as well. Mixing the wet into the dry may encourage her to eat a bit more and increase calorie count which should help. Your vet can also monitor her weight/BCS (most vets will let you weigh your pets at no charge) to make sure she is gaining/maintaining a healthier weight with the changes.

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