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Dog biting his own penis.

Species: Dog
Breed: Great Dane Weimerane
Age: 1-2 years
I have 2 foster brothers who had been severely abused when I took them in. (Broken ribs, mouths tied shut, mites, worms... The list goes on) my big guy Jack gets into these stages where he bites & motions his penis with his mouth. Sometimes he even falls asleep with his mouth on it. His brother never does this. I have always had female dogs. Maybe this is normal behavior? Tonight like many other nights, I found him in the spare bedroom doing this. I don't scold him when I find hi doing this, but try & get him into another activity (take him Outside & chase a ball etc...) as I said, his brother never does this. Jack is 146 lbs and my vet & trainer think someone tried to do some kind of special breeding....his brother (same litter) is 65 lbs & looks like a pitty mix. After much testing experts have told me they do not have the same father. Anyway, is this okay? My trainer & vet say don't worry about it. They were both neutered at 5 months old. He also tries to urinate on my chow girl (spayed 12 years old) often. He is extremely high strung (observed by his trainer) he goes crazy if he sees a shadow or light move on the wall. Sorry for the babbling question. I don't ever scold him for doing this, but if it's normal should I just let him be during his time? Thanks.


Online vet, Dr. Marie

Dr. Marie replied:

It is definitely not normal for a dog to bite at his own penis. This can sometimes be indicative of a behavioral issue or possibly even a physical problem.

When he does this, is his penis protruding outside of the sheath? If it is always out a little bit, or a lot then he could have a problem called paraphimosis and this can be quite serious. It is also possible that there is something about his penis that is bothering him such as an infection, a foreign object stuck in the sheath or a wound.

This is definitely something for which a veterinary exam is a good idea. The vet may have to sedate the dog, although some tolerate it well. They will have a thorough look at the penis and the prepuce for signs of foreign objects, infections, wounds, etc. If nothing is found, then the vet may suggest trying some anxiety medication.

This is definitely something that should be addressed. If it is a behavioural problem it could turn into a medical one if he ends up causing trauma to himself.

Hope things improve soon.

Dr. Marie.


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Disclaimer: Although Dr. Marie is a qualified veterinarian, the information found on this site is not meant to replace the advice of your own veterinarian. AskAVetQuestion.com and Dr. Marie do not accept any responsibility for any loss, damage, injury, death, or disease which may arise from reliance on information contained on this site. Do not use information found on this site for diagnosing or treating your pet. Anything you read here is for information only.

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Dr. MarieDr. Marie is a veterinarian who practices in a busy animal hospital in Ottawa, Ontario. She created Ask A Vet Question as a resource for good, accurate veterinary advice online. Dr. Marie treats dogs, cats, hamsters, guinea pigs, and rats. She has been a vet since 1999.

Is an online vet visit just as good as a trip to your veterinarian? No! But, many times, asking an online veterinarian a question can help save you money. While Dr. Marie can't officially diagnose your pet or prescribe medications, she can often advise you on whether a vet visit is necessary. You can also ask Dr. Marie for a second opinion on your pet's condition.