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My cat has bloody diarrhea after I switched food. What should I do?

Updated On September 23rd, 2025

My cat has being having diahrea for a couple of days i think it's because I switched his food but today he had blood in his poop and I don't know what to do please helppp

3 Answers

Most Helpful Answer

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Answered By Emily, DVM

Veterinarian

Published on May 30th, 2017

Hello- Sudden diet changes can cause both diarrhea as well as constipation. The blood could indicate significant inflammation in the colon from diarrhea, diet changes, an infection and/or other causes. Anytime there's blood in the stools it is recommended your pet see their veterinarian as some cases require antibiotics and possibly fluids as the diarrhea and inflammation can cause dehydration.

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Other Answers

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    Answered By David Elbeze, DVM, MRCVS

    Veterinarian

    Published on February 19th, 2017

    I doubt it is from the food switch, unless she is known to be very sensitive to various types of food. i would definitely recommend taking her to the vet, she might need a course of antibiotics if it is an infection.

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on April 5th, 2017

    Oh poor Aiden! This change in food could be causing the bloody and runny stool. I would start ordering Canidae, and I would try home remedy while you are waiting for it to arrive to see if that helps with the bloody and runny stool. Withhold food for 12-24 hours, then feed a bland diet of boiled white meat chicken (no bones) in small amounts several times a day for a couple of days. Then slowly add back in his normal diet. If the bloody and runny stool continues on the bland diet, he starts vomiting food, stops drinking water, starts vomiting water, or becomes very lethargic, he will need to see a vet right away.

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