Q: Does anyone know what black poop may mean in a cat?

May 21, 2009 | By Debra B. | 7 answers | Expired: 2437 days ago

Debra B.

I have a friend in Australia who is looking for some advice with her 4 year old neutered male cat. She has taken him to the vet, and the vet wants to biopsy stomach and intestines as the next step. My friend is wanting to know if she should get a 2nd vet opinion before doing something this invasive.

Medical history of this cat: He has had dental problems and a couple teeth extracted. He has had an enlarged bladder (cystitis) and blood in his urine. His diet has been changed from a dry food to c/d with some wet food supplementation. This vet wanted her to feed the cat chicken necks to help clean the cat's teeth. (I know, sounds strange to me.) She told me that her cat had black poop (not diarrhea) even before his food was changed to c/d.

The cat has an appetite, and is eating and drinking okay. He has not lost any weight, and has a good coat condition. The vet has done blood work for kidney and liver enzymes and CBC, and all the blood work came back normal. The cat has been X-rayed with no unusual findings. Upon physical exam, no enlarged organs can be palpated. The vet suspects stomach cancer and says that the cat is hemorrhaging internally. Then wouldn't the cat be anemic?

This is a young cat who is still in good body condition and still fairly active. Is there something else that should be looked for before doing a biopsy?

Has anyone else had a cat who passed black stools?

5/22/09 UPDATE: My friend is going ahead with the biopsies.

Readers' Answers (7)
Roz A.

May 21, 2009

Normally I would think a black stool means there is blood in it, just as in humans....

Thumbs Up: 2 | Thumbs up!


May 22, 2009

I don't think a second opinion is ever a bad idea, but it sounds like this cat is on borrowed time. Does she really want to wait for another vet to see it and go through the cost of diagnostics at the new vets place? The truth is sometimes hard to face, but it sounds like its time to take some surgical steps to remidy the problem. As a vet asst over the years, I've seen many animals that have mysterious ailments, and sometimes the only way to find out what is going on is to look for yourself (the vet of course!).

Thumbs Up: 1 | Thumbs up!


May 21, 2009

blood. old blood specifically. i would get another vets opinion, but this could be a sign of a few things, including cancer.

Thumbs Up: 0 | Thumbs up!

You might also enjoy:

Got a question about your pet? Get the answers you need from Zootoo's community of pet experts and owners.