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Why is my dog's penis bleeding during semen collection? Is it TVT?

Updated On September 23rd, 2025

Hello, My american bully is of 16 months and has been collected 5 times.In the last two AI collections it had some blood coming down from the part may be from the veins and there was some blood coming near the bulbus glandis while being collected I am quite worried as the breeder that came for mating told me that it has TVT and after sometime there will be a sudden drop in the semen count and the dog will face health issue as it is tranferable. Waiting for your rply thankyou so very much

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on January 4th, 2017

I would have your dog examined by a vet for confirmation that he has TVT. There typically is mass seen on the penis with TVT, and a vet can examine the area for the tumor, and take a biopsy of the mass to confirm he does have TVT. If he does have TVT, some of these tumors spontaneously regress without treatment, but some do have to be removed surgically if the tumor is found to be malignant. With medical treatment, there is an overall good prognosis, so I would recommend having him seen by a vet first to confirm TVT before getting worried. In order for it to be positively confirmed, a biopsy needs to be done, as it's not something that should be diagnosed based solely on blood dripping from the penis. There are other causes of blood dripping from the penis, such as prostate disease, bladder problems, and vigorous semen collection. These should be ruled out as well. The breeder, while they may be well-meaning, would have not have the veterinary training to make a definitive diagnosis of TVT, and you should therefore see your vet for an exam and biopsy before you start to worry :-)

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