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Why is my dog peeing blood during her heat cycle? Is it serious?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | unspayed | 155 lbs

Hello, my dog is urinitaing and it seems as if shes bleeding because the wee wee pad come out red. This is the time that she gets in heat but I've never seen this before. Also it's only appearing when she urinates.

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1 Answer

Most Helpful Answer

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Answered By Maria DVM

Veterinarian

Published on December 27th, 2018

I recommend calling your veterinarian in the morning and scheduling an appointment to have her looked at. There could be a few different reasons for blood in the urine. She can have a urinary tract infection, bladder stones, a kidney issue or even a bladder mass. I would recommend bringing a urine sample to have them evaluate it and see if Trinity has a urinary tract infection. I would also consider having x-rays performed to potentially look for bladder stones. Thank you for using Petco Pet Education Center, formerly Petcoach.

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