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My cat has bloody stool. How to tell which one in a multi-cat home?

Updated On September 23rd, 2025

Pet's info: Cat | Turkish Van | Female | spayed | 6 years and 4 months old | 6.6 lbs

Hi, one pf my cats passed some bloody dtool, bright red blood not dark or black. Problem is, I have 4 cats, I want to take my cat to the vet but I’m unsure which one passed the stool, none of them have bloody or poopy bums, they are all eating and drinking, playing and cuddling as usual, no yowling or pain indicators, pink normal gums, no lethargy, no nausea/vomitting. I can’t tell which cat it is! What should I do?

1 Answer

Most Helpful Answer

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Answered By Sara Farmer, DVM

Veterinarian

Published on July 7th, 2018

First off, I love Katniss Everclean's name! One option might be to confine whoever you think is the most likely culprit to a bathroom with a litter box and wait. This could take awhile if you choose wrong, and it can be a little stressful for a cat to spend a day confined so you may not want to go this route if any of your cats are easily stressed. I have also heard of veterinarians shaving up small pieces of different colored crayons (non toxic!) and putting the shavings into canned food to determine which cat might be having diarrhea or gastrointestinal issues. You probably don't have to worry about rushing to the vet if it is just a drop or two of blood in otherwise normal stool, so you could also just continue to monitor and see if you happen to catch someone in the act. If it is getting worse (i.e. if there is a large amount of blood or diarrhea) it should be easier to determine who the culprit is. Good luck - I hope you figure it out!

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