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My dog had diarrhea, now no poop & passing hard pellets. Constipated?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Small (up to 22lb) | Female | spayed | 15 lbs

My dog, Lilly ate poinsettia & had terrible diarrhea, so we took her to the vet Saturday. He prescribed antibiotics. She continued eating but has not pooped since. Now she’s having involuntary hard pellets come out mostly during her sleep. Please help! Could she now be constipated?

1 Answer

Most Helpful Answer

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Answered By Lauren Jones VMD

Veterinarian

Published on December 22nd, 2021

After a period of profuse diarrhea, the whole gastrointestinal tract is generally pretty empty. It can take several days for normal stool to form and pass normally. I wouldn’t worry about the little pellets - Lilly’s intestines are still just trying to get back to normal. The pellets mean that her overall stool quality is improving. Constipation rarely occurs right after diarrhea. As long as she isn’t straining while trying to poop, and is otherwise eating, drinking, and acting normally, it sounds as though things are improving. If she hasn’t pooped by Thursday, it’s worth having her rechecked by your vet. I try to give dogs up to 5 days to form normal stool after profuse diarrhea. I hope that everything goes well for Lilly!

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