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My dog has diarrhea with clumpy blood. When should I see a vet?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Male | neutered | 23 lbs

My dog has diarrhea which had clumpy blood. What do you think is wrong

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Answered By Jenny, DVM

Veterinarian

Published on January 9th, 2018

It can be a response to stress if there has been a change in diet or routine or caregivers or it can be a sign of an infection or pancreatitis. Anytime there is bloody diarrhea, especially in a small dog, it is recommended to see a vet as soon as your can to start treatment. In advanced causes it make them very weak and non responsive and often vomiting will follow

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