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My cat's poop is green, yellow, and runny. What should I do?

Updated On September 23rd, 2025

Pet's info: Cat | Persian | Female | unspayed | 6.17 lbs

Why is my cat doin greenish yellow partially solid and partially liquid poop....no change in diet donw

1 Answer

Most Helpful Answer

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Answered By Dr. Elizabeth

Veterinarian

Published on April 26th, 2020

A green discoloration often indicates a shift in the bacteria in the gut and often an infection. It could also be due to parasites like worms or giardia. If the diarrhea has continued beyond 24 hours, I recommend to have her examined by the veterinarian. With continued diarrhea, there are often bacterial shifts in the gut that will make matters worse regardless of the initial cause. Make sure to bring in a sample of fresh stool. The doctor will check her for parasites and bacterial over growth. Many times a bland diet can help and then a slow, gradual introduction to the normal food can be done. A bland diet can consist of 25% boiled white meat chicken and 75% boiled white rice. This should all be plain. A bland diet should be fed for 48 hours after resolution of the diarrhea and then your kitty should be transitioned back to her normal food over a few days. I hope Smokey starts feeling better quickly! Please feel free to post any additional questions.

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