My cat has bloody, loose stools after deworming. What's wrong?
Updated On September 23rd, 2025
Pet's info: Cat | Persian | Male | unneutered | 3 years and 4 months old | 4.59 lbs
My cat's poop has blood in it lately. He's had loose stools for about 2 weeks now, which was when he was dewormed. I started him on these probiotics three days ago. He's eating his food but he doesn't finish it in one sitting. He usually finishes it quickly. He's been pooping a lot too for the past few days. But the blood only showed up prominently today. Both the photos of the poop were from today. I've changed his food from all wet food to dry food in the morning and wet food at night.
2 Answers
Most Helpful Answer
Published on June 27th, 2018
I am sorry to hear about your kitty! With blood present I think it is time for a vet exam (and bring a stool sample along). We can have intestinal parasites that are not treated by dewormer (such as Coccidia and Giardia). We can also have things like colitis, inflammatory bowel disease, or food allergy cause these issues. The vet can examine your kitty and based on the exam and history make recommendations and possible test and treatment options.
19Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on September 7th, 2017
This may be a bacterial infection or diet or stress related. Since it is getting worse I would have a fecal exam redone to check for bacteria or giardia. They may recommend a probiotic to help with stress and a diet change temporarily to something easier to digest.
1Pet Parents found this answer helpful
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