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My puppy has diarrhea after food switch. Is it normal? How long?

Updated On September 23rd, 2025

Pet's info: Dog | Samoyed | Male | unneutered | 9 months and 1 day old | 6 lbs

Oli is 9 months now. He's been eating Royal Canin puppy food all his life. I switched him to Pedigree puppy 2 days ago (it's cheaper). But yesterday i noticed bile in his crate, and today he has diarrhea. Is it normal to have this when switching foods? And if so, how long would it last? Thanks

1 Answer

Most Helpful Answer

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Answered By Jessica Desrosiers

Veterinary Technician

Published on September 2nd, 2019

Switching foods too quickly can cause digestive upset such as vomiting and diarrhea. It would be best to return to Oli's original food until his stomach settles and then start a gradual change to the new food over a period of 7-9 days, slowly adding in more of the new food over time. This can help minimize stomach upset from the new food as he adjusts.

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