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My young, active cat is underweight. How can I help him gain weight?

Updated On September 23rd, 2025

Pet's info: Cat | Maine Coon | Male | neutered | 9 months and 29 days old | 11 lbs

Hi , I'm just wandering what's the best way to get a cat to gain weight? I have a 10 month old Main coon boy that grown quite a bit without gaining any weight . He is perfectly healty no medical issues whatsoever only that he grows so fast that he looks very underweight all the time. He is 11 lbs now and hasn't gained any weight since he was 8 months old. Also he is very active, pretty much running around all day which again makes it difficult to put some weight on him.. Thank you

2 Answers

Most Helpful Answer

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Answered By Linda G, MS, DVM

Veterinarian

Published on January 10th, 2018

Hello. As long as Sock is eating a good quality, name brand kitten food, then he will develop normally. He is a teenager now, & he will stay lean probably for the first year or so of his life. As he transitions into maturity, he will naturally begin to gain additional weight. Watch this, because Maine Coons do have a tendency toward obesity. So keep him on a kitten formula for the first 12-15 months, then transition him to an adult maintenance food. Take care.

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Other Answers

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    Answered By Mirissa Duncil, DVM

    Veterinarian

    Published on January 9th, 2018

    Hi there. I wouldn’t be terribly concerned at weight evening off at this stage-it may still be that he picks up weight as he ages, but right now I’m sure you still have an active kitten. He may well still be growing. It sounds like you take very good care of him, and if he is having no health issues-it sounds like everything is in order. I hope this helps.

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