Canine Papilloma in Dogs: Causes, Symptoms, and Treatment

Understanding Canine Papilloma in Dogs: Causes, Symptoms, and Treatment

By Dr. Roger Hart – Bushnell Animal Clinic

Discovering unusual growths on your dog’s skin or inside their mouth can be alarming for any pet owner. One condition that commonly causes wart-like growths in dogs is canine papilloma, also known as canine viral papillomatosis. These growths may look concerning, but they are usually benign and often resolve on their own.

At Bushnell Animal Clinic, Dr. Roger Hart frequently evaluates skin lumps, bumps, and oral growths in dogs. Understanding what canine papillomas are and how they develop can help pet owners feel more confident when caring for their pets.

This guide explains the causes, symptoms, diagnosis, and treatment options for canine papillomas.

What Is a Canine Papilloma?

A canine papilloma is a wart-like growth caused by the canine papillomavirus. The virus infects the skin or mucous membranes, leading to the formation of small benign tumors.

These growths often appear as:

• Small, cauliflower-like warts

• Rough or irregular bumps

• Clusters of growths in one area

Papillomas most commonly develop in the mouth, lips, eyelids, and face, although they can also appear on the skin.

The condition is especially common in young dogs and puppies, whose immune systems are still developing.

What Causes Canine Papillomas?

Canine papillomas are caused by infection with the canine papillomavirus, which spreads through direct contact between dogs.

Dogs can become infected by:

• Playing with infected dogs

• Sharing toys or water bowls

• Contact with contaminated surfaces

The virus enters the body through small breaks in the skin or mucous membranes.

Because the virus spreads through contact, it is most commonly seen in places where dogs interact frequently, such as:

• Dog parks

• Boarding facilities

• Grooming salons

• Training classes

Which Dogs Are Most at Risk?

Certain dogs are more likely to develop papillomas.

Puppies and Young Dogs

Puppies under two years old are the most commonly affected. Their immune systems are still developing, making them more susceptible to viral infections.

Dogs with Weakened Immune Systems

Older dogs or dogs with underlying medical conditions may also develop papillomas.

Dogs in Social Environments

Dogs that spend time in boarding facilities or dog parks have greater exposure to the virus.

What Do Canine Papillomas Look Like?

Papillomas often have a distinct appearance that helps veterinarians recognize them.

Typical characteristics include:

• Small raised growths

• Rough, irregular surfaces

• White, gray, or pink color

• Cauliflower-like texture

In some cases, multiple warts may appear together in clusters.

When papillomas occur inside the mouth, they may grow on:

• The lips

• The gums

• The tongue

• The roof of the mouth

Most papillomas remain small, but some may grow larger over time.

Symptoms of Canine Papilloma

Many dogs with papillomas show no symptoms other than the visible growths. However, depending on their location and size, papillomas may cause additional signs.

Possible symptoms include:

• Visible warts or bumps

• Bad breath

• Drooling

• Difficulty chewing

• Bleeding from irritated warts

If papillomas develop in the mouth, dogs may occasionally experience discomfort when eating.

Are Canine Papillomas Dangerous?

In most cases, canine papillomas are benign and not dangerous. The immune system typically recognizes the virus and eliminates the growths within several weeks or months.

For many dogs, the warts gradually shrink and disappear without treatment.

However, veterinary evaluation is still important because:

• Some tumors can resemble papillomas

• Large warts may cause irritation

• Rare complications may occur

How Veterinarians Diagnose Canine Papillomas

At Bushnell Animal Clinic, diagnosing papillomas usually begins with a thorough physical examination.

Physical Examination

Veterinarians can often recognize papillomas based on their appearance and location.

Biopsy

If the growth has an unusual appearance, a biopsy may be recommended. This involves removing a small tissue sample for laboratory analysis.

Fine Needle Aspirate

In some cases, a fine needle aspirate may be performed to examine cells under a microscope.

These diagnostic tools help confirm the diagnosis and rule out more serious conditions.

Do Canine Papillomas Need Treatment?

Many papillomas do not require treatment. In young dogs especially, the immune system often eliminates the virus within one to five months.

However, treatment may be recommended if:

• Warts grow very large

• The dog has difficulty eating

• The growths become infected

• Papillomas persist for several months

Treatment Options for Canine Papillomas

When treatment is necessary, several options may be considered.

Surgical Removal

Large or irritating papillomas may be surgically removed.

Cryotherapy

This treatment freezes the wart tissue, causing it to fall off.

Laser Removal

Some papillomas can be removed using laser therapy.

Immune Support

In many cases, improving the dog’s immune response allows the body to eliminate the virus naturally.

Your veterinarian will determine the most appropriate treatment based on the individual dog.

Can Canine Papillomas Spread to Other Dogs?

Yes. Canine papillomavirus is contagious among dogs, particularly through direct contact.

However, the virus is species-specific, meaning it cannot spread to humans or other animals.

To prevent transmission:

• Avoid close contact between infected dogs and other dogs

• Do not share toys or food bowls

• Wait until warts resolve before visiting dog parks

How Long Do Papillomas Last?

Most papillomas disappear within one to five months as the immune system clears the virus.

Once a dog recovers, they usually develop immunity to that strain of the virus, making reinfection unlikely.

Preventing Canine Papillomas

While it is difficult to completely prevent exposure to papillomavirus, certain steps may reduce risk.

Helpful prevention strategies include:

• Maintaining strong immune health

• Avoiding contact with infected dogs

• Keeping grooming tools clean

• Monitoring your dog for new growths

Routine veterinary care also helps detect skin issues early.

When Should You See a Veterinarian?

You should schedule a veterinary visit if your dog develops:

• Rapidly growing warts

• Bleeding growths

• Painful lesions

• Difficulty eating

• Warts that persist longer than several months

Early evaluation helps ensure the growths are benign and receive proper care if needed.

Veterinary Care at Bushnell Animal Clinic

At Bushnell Animal Clinic, Dr. Roger Hart provides comprehensive care for dogs with skin conditions, lumps, and oral growths.

Services include:

• Skin and oral examinations

• Lump and growth evaluation

• Diagnostic testing

• Surgical removal of masses

• Preventive care and wellness exams

The goal is to ensure pets remain healthy and comfortable throughout their lives.

Final Thoughts

Canine papillomas are a common cause of wart-like growths in dogs, particularly in puppies and young dogs. Although they may look concerning, most papillomas are benign and temporary.

Still, any new lump or growth should be evaluated by a veterinarian to ensure an accurate diagnosis.

If you notice unusual growths on your dog’s skin or inside the mouth, schedule an exam with Dr. Roger Hart at Bushnell Animal Clinic. Early evaluation provides peace of mind and helps ensure the best care for your pet. 🐾

Frequently Asked Questions About Canine Papilloma

What is canine papilloma?
Canine papilloma is a benign viral growth caused by the canine papillomavirus. It often appears as wart-like growths around a dog’s mouth, lips, eyes, or skin.

Are canine papillomas contagious?
Yes. Canine papillomas are contagious between dogs. The virus spreads through direct contact with infected dogs or contaminated objects such as toys, bowls, or bedding.

What do canine papillomas look like?
Papillomas usually appear as small, cauliflower-like warts. They may be white, pink, or gray and commonly occur around the mouth or face.

Are canine papillomas dangerous?
Most canine papillomas are benign and not dangerous. However, they can become irritated, bleed, or become infected, especially if located in the mouth.

Do canine papillomas go away on their own?
Yes. In many cases papillomas disappear on their own within 1 to 5 months as the dog’s immune system clears the virus.

Do papillomas need to be removed?
Treatment is not always necessary. A veterinarian may recommend removal if the papillomas are painful, bleeding, infected, or interfering with eating.

Which dogs are most likely to get papillomas?
Papillomas are most common in young dogs with immature immune systems and in dogs with weakened immunity.

Can humans get canine papilloma virus?
No. The canine papillomavirus does not infect humans. It only spreads between dogs.

When should I take my dog to the veterinarian for papillomas?
You should see a veterinarian if the growths are bleeding, rapidly increasing in size, causing pain, or interfering with eating.

How can canine papillomas be prevented?
Preventing contact with infected dogs and maintaining good hygiene with shared toys or bowls may reduce the risk of infection.

Related Dog Health Articles

You may also find these veterinary articles helpful:

• Dog Abscess
• Dog Lump Under Skin
• Dog Sebaceous Cyst
• Lipoma in Dogs
• Dog mammory tumor
• Dog Skin Infection
• Hamartoma in Dogs
• Dog Warts and Skin Growths
• When to Worry About a Lump on Your Dog
• Dog Skin Tumors