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Why is there brown goo that looks like blood on my dog's diaper?

Updated On September 23rd, 2025

Pet's info: Dog | Maltipoo | Female | spayed | 18 years and 2 months old | 11 lbs

My dog wears diapers and today I found a bit of brown goo, what looked like to be blood, on her genital. My dad said when he changed her that he didn’t notice anything other than pee on her diaper, and she is not secreting it either. There is no leakage that I can see either. I’m not sure what it could be. She is eating normally and drinking water as usual. Any ideas of what it could be?

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1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 8th, 2021

I see what you mean in the picture. It doesn't look like blood to me, but it could be when you look closer. It may be Brandy has a little blood in her poop, which could be due to a stomach illness or eating something rotten. It could also be an indication of an anal sac issue. Given that it's quite a small amount and she is otherwise normal, I'd keep an eye on her for now. If she keeps having this in her diaper, then I would have it checked out by a vet. I hope this helps.

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