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My 3-week-old puppy is weak, not suckling. How to feed safely?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Male | unneutered | 23 days old

My 3 week old puppy isn’t suckling from it’s mother, he tries to suckle but gets very little milk and quickly gives up so I began to syringe feed him (he doesn’t suck on it) 6ml every 2/3 hrs, he’s very weak and underweight compared to his littermates, what can I do to help him gain weight, maybe improve his ability to suckle. what is the best way to feed him to prevent aspiration and how do I know if he has gotten pneumonia from improper feeding, how much and how often am i supposed to feed him

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on July 18th, 2018

I would be concerned that there is a functional issue such as a cleft palate or other problem that is preventing him from being able to suckle, or that may be causing him discomfort. If he is losing weight, unable to suckle and has the symptoms of pneumonia, then it is best to seek out veterinary care immediately as dehydration and lack of nutrition can quickly kill a puppy. Once he has been checked out by a vet, you can return to trying to bottle feed him. Keeping him on his belly may help with aspiration if he has a hard time, however your vet can recommend additional options depending on their exam. Most puppy formulations will also have feeding instructions on the can so you know how much to give and how often (usually every few hours until they are older, and then decreasing as they transition to food around 4-6 weeks of age.)

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