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Can dogs drink milk? What about allergies or an upset stomach?

Updated On September 23rd, 2025

Pet's info: Dog | Maltese | Male | 4 months and 15 days old | 10 lbs

Hello I was wondering if my dog can drink milk, because I read somewhere that they can have allergies

1 Answer

Most Helpful Answer

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Answered By Kevin Sanada, DVM

Veterinarian

Published on November 8th, 2017

As dogs age and get weaned off of their mother's milk, they lose an enzyme that breaks down the protein in milk. Without this enzyme they can get diarrhea and other gastrointestinal upsets when they drink milk. Generally, we advise owners not to feed their dogs milk once they are over three months old. An allergy to the milk is also possible, but not very common and would similarly cause gastrointestinal problems. I hope that helps and all is well with Snowie.

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