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My new rescue dog is underweight. How can I help him gain weight?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Male | unneutered

Our dogs are rescue that we got about a week ago he's under way we're not sure the breed and how long will it take and how can we put weight on him

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2 Answers

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Answered By Vanessa Yeager DVM MPH

Veterinarian

Published on May 18th, 2018

Hi and thanks for posting on Petco Pet Education Center, formerly Petcoach! If he is rescue, he may not have been eating as much every day as he should which is why is a little thin. Now that he is in good hands, feeding him a good quality dog food formula (I'd go with Hill's, Science Diet, or Royal Canin) will help put weight on him. It is hard to say what Eddie's ideal weight should be without seeing Eddie in person. I would have him evaluated by his veterinarian to assess how many calories he should be receiving every day so you know how many cups to give per day. I hope this helps!

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    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on September 26th, 2017

    The best way is to feed him both high quality wet and dry food, give him small quantities up to 5 times a day in the first few weeks, it will help him gain weight faster. having him neutered will also help with weight gain.

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