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My dog has bright red blood on her bum and stool. Is it anal cancer?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Medium (23 - 60lb) | Female | spayed | 6 years and 11 months old

Hi My dog has had bright red blood on her bum and very title on the stool today, but i did find blood spots on pillows. She is perfectly fine, playing, hungry, cuddly but now i am terrified this may be anal cancer. only last week i took her to the emergency vet as she suddenly fell and was unable to walk (recovered within 1 minute, no lethargy) I am terrified of going to work tomorrow she is my guardian angel and she needs to be well

1 Answer

Most Helpful Answer

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Answered By Andrea M. Brodie, DVM

Veterinarian

Published on January 17th, 2019

It is not possible to assess your dog's anus via the internet and I strongly recommend you take Lady to a veterinarian for an exam. She may have an abscessed anal sac/gland or actually may have a rectal polyp or an injury. It is also possible that the blood is not coming from the anus, but from the vulva and then there is a possibility of your dog suffering from a UTI. Best take her to a vet in the morning.

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