Dorian T. Catsby

Is it normal for a cat to lose weight extremely slowly?

We recently put our four-year-old cat on a soft-food-at-night diet, as per our vet's recommendation. He weighs 19 lbs and though he's a big cat, the vet would like him to weigh around 13-14. It's been a month, and he hasn't lost any weight at all. We carefully watch his food intake to make sure he's not stealing from the other cat, and we're very meticulous about making sure we don't give him too much food. He gets 1/4 C. of Science Diet in the mornings (the vet recommended switching him to this food, as it's lower-calorie than what we had been giving him) and half a 5.5 oz. can of soft food (also Science Diet) in the evenings. He's very active and is always chasing/playing with our other cat. Should we be concerned that he hasn't lost any weight yet?

Asked by Dorian T. Catsby on Jun 7th 2012 in Other Food & Nutrition
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Izadore (Izzie)

I would be concerned, but not panicked. It sounds like you are being very vigilant with him and also that he's getting exercise, both of which are great. Has your vet done tests to make sure he doesn't have other health issues such as thyroid concerns? If not, this may need to be your next step. Chat with the vet about your kitty not having lost any weight and ask for their opinions and further advice.

Izadore (Izzie) answered on 6/8/12. Helpful? Yes/Helpful: No 1 Report this answer


Kitties are supposed to lose weight slowly, ideally no more than 3-4 ounces a week. Rapid weight loss can cause fatal liver disease. That said, Science Diet is really crappy food (even though the vet sells it), full of by-products, grains, and useless fillers. The key to weight loss is not just calorie count, but protein level as well. Please go to for excellent information on feline obesity and weight loss.

Monster answered on 6/8/12. Helpful? Yes/Helpful: No 0 Report this answer