Accepted Answer

Bleeding from the rectum can result from a number of different things that generally cause inflammation or irritation of the rectum or anus. It can also occur with diseases of the colon. Causes include:

Rectal or Anal strictures
Problems with the Anal Glands
Perianal Fistulas
Cancers
Rectal Polyps
Inflammatory Bowel Disease (IBD)
Parasites
Prostatic disease (Males)
Constipation
Ingestion of Foreign Bodies (Bones, hair, toys, etc...)

There are also many cats who will have a few BMs with blood in it from a little bit of stress, and then will not repeat this. The vet will often treat these cats with a drug called Flagyl, and prescribe a bland diet (usually an Rx veterinary canned diet such as i/d or w/d) for about a week. If your cat is not on a monthly heartworm preventative, parasites can certainly be a possibility and you should bring her in for an examination and a fecal analysis (bring a stool sample with you). Upon physical exam, the vet will also be able to check her anus and rectum for any signs of polyps, tumors or anal gland inflammation. If all checks out okay, and the parasite test is negative, (and this bleeding continues) the next step would be to pursue blood and urine laboratory testing and abdominal ultrasound to look for signs of inflammatory bowel disease.

I hope that this information is of help to you, and I wish you the best of luck with your kitty. Please let me know if I can be of further assistance.

Dr. K

Expert:	Dr. K
Pos. Feedback:	99.5 %
Accepts:
Answered:	2/18/2009

Veterinarian

9 years experience as Veterinarian