Updated On September 23rd, 2025
Pet's info: Cat | Mixed Breed | Female | unspayed | 6 months and 9 days old | 4.6 lbs
Our Siamese is 6 months and was on a tape worm medicines and a yellow dewormer solution for 9 days a few weeks ago because she had diarrhea and worms we give her earth born and she's done the dewormer but there's dark blood in stool when pooping what would cause this we brought in a stool sample and the vet says there isn't any parasites
1 Answer
Published on March 24th, 2018
I'm sorry Apple isn't doing well at the moment! There are a number of other causes of blood in the stool such as a bacterial infection, viral infection, a foreign body, eating something rotten, giardia, coccidia, or damage to the GI tract among other causes. I'm not sure if the vet did a fecal float to check to check for parasites, but giardia cysts are often not detected with this test because of their small size, and will often require a special zinc sulfate flotation solution for detection. You can ask your vet if they have done this test to check for giardia as a possible cause of her bloody stool. Further tests may be needed as well such as blood work, a urinalysis, x-ray of her abdomen, or an ultrasound of her abdomen. I would speak to your vet to see if one of these tests could be done to help diagnose the cause of her symptoms so she can be treated. I hope this helps, best of luck!
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