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Why does my puppy have diarrhea with red mucus and blood?

Updated On September 23rd, 2025

Pet's info: Dog | Rottweiler | Male | 2 months and 28 days old | 22 lbs

Hi. I have my rottweiler puppy 12 weeks old. I just got him week ago, and yesterday he started having diarrhea. I changed different brand name for food. I don’t know maybe it’s separation anxiety from family. And now he’s pooping diarrhea with red mucus.

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1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on September 22nd, 2018

This is likely to be caused by a colitis, which is an inflammation of the last part of the colon, usually dietary related. As a first approach I would recommend to start feeding with a bland diet based on boiled chicken and rice in small portion every 6 hours for the following 48hours. Then gradually reintroduce the normal diet over 5 days. I would definitively recommend a veterinary check up if the signs persist or you notice vomiting, lethargy or inappetence. Hope this answer was helpful, but please do not hesitate to contact us again on the forum or by requesting a consultation if you have any more questions or to discuss it any further.

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