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My puppy ate adult dog food. Will he be sick or refuse his puppy food?

Updated On September 23rd, 2025

Pet's info: Dog | Rough Collie | Male | neutered | 3 months and 5 days old | 32.2 lbs

I feed my 12 week old puppy Diamond Puppy food the purple bag. Today my puppy and I were at my friend's house and she has a one year old boxer. My friend fed her boxer and my puppy some Blue Buffalo Wilderness Adult dog food. Is my puppy ok? Will my puppy still eat his puppy food?

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1 Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on April 4th, 2019

Trusty is a very cute puppy! The main concern when a dog is fed a diet they are not used to is that it can cause G.I. upset. This can range from mild to severe. In general it is not a good idea to give dogs large quantities of foods or treats that they are not used to. Monitor your puppy closely over the next 24 hours for any signs of vomiting, diarrhea, not eating well or lethargy. If these are seen, call your veterinarian. Is long as he feels normal, you can feed him his regular food. Hopefully he will not show any signs! Please feel free to post any additional questions.

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