Overview of Causes of Dog Penile Inflammation
Severe cases of inflammation can be caused by:
- Injury or trauma
- Foreign objects
- Phimosis (where the prepuce cannot draw back to expose the penis)
- Bacterial dog penis infection
Signs of Canine Penile Infection
An infected penis will bother a dog and cause the dog to want to lick the penile area. The discharge may also smell and produce a foul odor. Swelling and pain are rare in cases of infection, and are more indicative of an injury to the area.
If you see discharge, be sure to see a veterinarian. The Vet will prescribe antibiotics based on the type of bacterial infection identified. Any hair will be clipped away from the opening of the prepuce. The Vet will flush the preputial cavity with saline or a mild antiseptic. If a dog has not been neutered, it may be recommended in order to reduce any secretions from the preputial area.
Canine Herpes Virus
If a Vet suspects that the herpesvirus is the cause, he or she will do a blood test to confirm the diagnosis (viruses are not treatable). Note that during intercourse, a male infected dog penis can transmist infection to the female.
In terms of herpesvirus and dog breeding, it can cause a female bitch to lose the first litter of puppies. Afterward, the female will develop an immunity to the herpesvirus. A vaccine is not available in the U.S. for the virus, but is available in Europe.
Dog Testicles Infection
Note that the testicles can also become infected (called Orchittis). Infection can result in infertility. Common causes are dog bites, wounds, lawn or other chemicals, or burns. A canine testicle infection can also be caused by bacteria that spread from the prostate or the bladder.
To prevent problems, if a dog is bitten or injured on the testicles, see a veterinarian for early and immediate treatment.
Symptoms of a Canine Testes Infection
- Licking the scrotum
- Enlarged testicles
- Hard testicles
- Stilted walk or gait
- Spread legged walk
The veterinarian will take a culture to determine the type of bacteria causing the problem. Bacteria-specific antibiotics are used to cure the issue. Swelling can be reduced with a cold pack or with corticosteroids or NSAIDs. One side effect of treatment may be an inability for the testicles to produce sperm.
If infection continues, a Vet may recommend that the dog testicles be removed.
References and Resources for Further Reading:
Owners Home Veterinary Handbook
Eldredge, Debra M; Carlson, Liisa D'; Carlson, Delbert G; Giffin, James M.