Reasons why your dog bleeds from the penis

Your dog may have penis pain when urinating

The presence of blood will always cause us a great alarm and more if it is due to the dog's penis, since the least we can think is that it is very sick.

So if your dog bleeds from the penis, we will inform you of the possible reasons, what should be done to diagnose this problem and how to treat this pathology.

Is it normal to see blood in the dog's urine?

If your dog feels pain in the penis, you should take it to the vet

As long as it is a small droplet that appears at the beginning or the end, it can be normal, especially if this is not accompanied by a certain decay in the animal, or that their urinations are either very distant or very frequent (more than usual).

Also that it presents difficulty when urinating and is that in fact, if the dog has not suffered any trauma or run over that suggests some internal bleeding, you shouldn't leak blood from your penis.

Diseases from which a dog can bleed from the penis

Bleeding from the penis is a sign that something bad is happening to your dog


One of the diseases that may be causing a problem for which your dog will appear traces of blood in your urine, It may be related to his prostate and this may have to do, among other things, with the fact that your dog is not sterilized.

In the event that the prostate ailment is of a young dog, sterilizing it will be enough to stop presenting this type of problem. But if this occurs in older dogs, we are faced with a case of prostatitis.

This is caused by a bacterial attack on the animal's organ, and you may have cysts that press on your organs and that is why the evacuation of blood occurs. There are more complicated cases in which it shows tumors.

Prostate cancer

If prostatitis is demonstrated with a tumor, we will be talking about prostate cancer, which in turn can present in different types of complications.

The tumor may present as benign, but in the event that the tumor is malignant, this will be the reason for surgery and the presence of blood in the urine can become frequent, in addition to presenting different types of discomfort when walking, feverish symptoms and constipation in certain cases.

These cases will require a lot of attention on your part and that you have constant reviews with veterinary professionals, because your recovery will depend not only on the surgery, but also that we follow all the steps indicated so that our furry beloved improves.


The same level of incontinence that humans have can also be part of the animal world and Cystitis is one of the problems that we and our beloved dogs have in common.

When we talk about cystitis we refer to an inflammation that occurs in the walls of the bladder, which will achieve a reduction of space in this. Since your pet does not have a sufficient amount of urine storage space in his bladder, he will constantly feel the urge to urinate, much more than the usual urge.

In the urine constantly released by the cystitis problems that our pet faces, certain traces of blood may appear, both in the penis of the male and in the vagina of the female.

To find out that your dog has cystitis, you will surely see him complaining while urinating, because this will generate a particular annoyance. In the event that you think your dog has cystitis, you should go to the vet.

Canine diabetes

Another reason that your dog bleeds from his penis is the possibility that this is a symptom of canine diabetes. Among the ways you have to realize that your dog can present these problems, is to high blood glucose level in your system, You may notice that he is excessively thirsty, urinates more than necessary, is usually very hungry, even when he has just finished his meal and is usually hyperactive.

As with humans, when we refer to diabetes we are talking about the inability of the canine body to produce insulin, which is the regulator of sugar levels in the body.

This is what increases glucose in the dog's body, facilitating at the same time that a greater amount of bacteria enter the urinary tract. The expulsion of blood from your dog's penis will be the consequence of the improper entry of said bacteria.


The presence of bacteria in urine They are indicative of an infection and blood traces would confirm that the bleeding from the penis is coming from there. In any case, the veterinarian will prescribe the corresponding antibiotics and as soon as the treatment is finished, a second sample is made to verify that the infection has been eradicated.

Benign prostatic hyperplasia

Prostate conditions can also be the cause of blood in the dog's penis, specifically benign prostatic hyperplasia. This is a disease that manifests itself with the presence of hematuria.

In order to diagnose it, it is necessary for the vet to perform a digital rectal examination in order to determine if the prostate is larger than normal, if its position and consistency to the touch is adequate and this would explain the bleeding, in addition to the difficulties in doing the physiological needs.

Generally, this appears in adult males of middle or advanced age that have not been neutered, therefore if the diagnosis coincides with this disorder, the vet will probably opt for castration.

If your dog is older, you should know that it is perfectly feasible to proceed with neutering, of course, you must undergo a series of pre-operative exams The results of which must show that it is suitable for the procedure.

Thus, a few days after castration, the prostate will again reduce its size and without risk of re-ignition, since the production of testosterone has been inhibited and with it the possibility of inflammation disappears.

Injury to the penis

Not always when we talk about blood that comes out of our pet's penis, we will be talking about a condition that comes from inside your body. Sometimes your dog does not have diabetes, cystitis or tumors, but has simply been injured by being very unruly and playing with other dogs, or simply hitting himself.

In the event that this is just a blow you should not worry about anything. This will heal and your dog will not bleed anymore. Everything will depend on the type of blow that this intrepid furry has taken to calculate how little time it will take to bleed.

My dog ​​bleeds when he has an erection, why?

To your dog, during their erection periods their penis fills with blood And if that blood ends up being expelled in any way by it, we find ourselves facing some type of specific condition that should lead us to a consultation with the veterinary specialist.

The possibilities of this type of bleeding during an erection are different, but lithiasis can be found among the most probable, as well as any other type of infection produced in the urinary tract, which is generating a problem and subsequent bleeding.

Analytical and physical reviews of your beloved pet will be important in the event that it shows bleeding during erection, as they are not usually inconveniences that happen normally. Some of the conditions that we have previously mentioned is causing this insufficiency.

Is it normal for a dog to bleed after mating?

Dogs that bleed after mating can have serious problems

During the mating process, there may be different types of situations in which it culminates in subsequent bleeding. Among the factors that may come into play in this, one is the typical “buttoningWhich occurs when the dog mates.

Dogs can be neutered so they don't have young

During this process, the male's penis shows a swelling that causes it to be plugged in the bitch's vagina. Different types of situations can occur that interrupt this moment of mating and the dog, when showing that swelling in his penis, can be injured by the fact of having extracted his reproductive organ from that of the bitch in this way.

Another drawback for which post-mating bleeding can occur in your dog is because the bitch showed a communicable disease through intercourse, which is called Transmissible Venereal Tumor (TVT).

My dog ​​urinates blood after running, why does it happen?

This is caused by something that happens to both our beloved pets and us humans, and it is a problem called rhabdomyolysis. You will see that your dog runs and that exercise overload causes a breakdown of the muscle to occur, with a release of the blood that the fibers of his muscles contain.

This is what will make you see your dog's urine stained an intense reddish color and it has to do with the fact that the dog's physical exercise limits have been exceeded. Learning where your dog's demanding limits are is what will make you stop him before he gets to suffer from these types of problems.

Can bleeding occur in puppies?

Bleeding can occur in puppies. East does not usually have a particular characteristic, so consulting with the vet will be one of the best recommendations. These little ones can have a lower urinary tract infection, which makes them feel very painful when urinating and we can see some drops of blood.

These types of infections are usually associated with stones in the bladder and an adequate treatment will be the one given by the veterinary specialist, so that this little one grows without any inconvenience and the bleeding disappears.

What to do if my dog ​​bleeds from the penis?

If you suspect that he has suffered some trauma or that he has a disease, what you have to do is contact a vet as soon as possible. Keep in mind that the sooner you can make the diagnosis, the sooner you can start treatment and therefore the sooner you can recover.

This treatment will depend on the cause. For example, if you have an infection, you will be given medications to fight it, such as antibiotics, as well as anti-inflammatories that will reduce the pain. Instead, if you've suffered trauma, you may need surgery.

How to prevent bleeding?

The best way to prevent bleeding from the penis is by giving it a quality diet (without grains or by-products), and keep up to date the schedule of both vaccination and antiparasitic treatments. Also, another highly recommended thing you can do is castrate it.

We hope it has been useful to you.

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  1.   clara said

    hello… your article is very interesting, especially diets, which I would like to make a suggestion, that they publish diets for dogs with hypothyroidism (I have a beagle).

    thank you very much.