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Neutered male dog bleeding after contact with female in heat?

Updated On September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | unspayed | 2 years and 10 months old | 20 lbs

I have a female dog who will be three years old in September. She started her heat cycle three weeks ago. Today I noticed what looks like light coloured blood on my neutered Male dog’s stomach just next to his penis. They have not been alone for more than a few minutes, could he have penetrated her? Should I be worried?

3 Answers

Most Helpful Answer

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Answered By Lauren Jones VMD

Veterinarian

Published on August 20th, 2022

The good news is that your male dog was neutered. While neutered male dogs *can* mate with in heat females, they do so uncommonly and obviously can't impregnate the female. The fact that Bella and her housemate were only alone for a few minutes makes penetration unlikely, as this usually takes some time when dogs "tie" during the mating process. Even if your male did mate with Bella, there is no cause for concern! However, keep an eye out on your male dog to see if he's been licking the skin around his penis excessively. Salivary staining can lead to a reddish-brown discoloration of the fur, which can look a little bit like blood. If he's licking a lot, it would be best to take him to see his vet in case he's starting to develop a skin infection.

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Other Answers

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on

    This seems unlikely even though it cannot be ruled out. Early pregnancy tests can be performed (relaxine usually at about 22-27 days), but the most reliable way of detecting and monitoring pregnancy is abdominal ultrasound. Developing embryos can be detected as early as three weeks post-breeding and the viability of the fetuses can be determined throughout the pregnancy. Ultrasound is the ‘gold standard’ for detecting pregnancy and assessing the viability of the fetuses. Inducing abortion in early pregnancy phases is possible as well through an injectable medication, please ask your local veterinarian.

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    Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

    Veterinarian

    Published on

    Hi and thanks for your request. Pardon me for the previous answer. I thought you were more concerned about your female dog. To be able to evaluate any possible injury on your dog’s penis, a pic of it with retracted prepuce would be essential. In these cases if bleeding is not persistent/active and if there are no other signs like persistent licking of his penis or frequent urination then a major trauma is unlikely. minor traumas are most commonly self limiting and resolving. A buster collar would be needed if he is licking his private parts.

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