Do Dogs Get Warts? A Complete Guide to Canine Papillomas

Do Dogs Get Warts? Understanding Canine Papillomas

Yes, dogs absolutely get warts. Canine warts, medically known as papillomas, are benign skin growths caused by the canine papillomavirus (CPV). They're among the most common skin conditions seen in veterinary clinics, particularly in puppies and young dogs under two years of age, as well as senior dogs with declining immune function.

The canine papillomavirus is species-specific — meaning your dog cannot transmit warts to you or your cat, and human warts cannot spread to dogs. According to the Merck Veterinary Manual, there are multiple strains of CPV, each tending to affect different body regions. The most common presentation is oral papillomatosis (warts in and around the mouth), but warts can also appear on the eyelids, between the toes, on the abdomen, and in the genital region.

Most canine warts are harmless and self-limiting, resolving on their own within 1 to 3 months as the dog's immune system clears the virus. However, some cases require veterinary intervention, and certain wart-like growths may actually be something more serious — which is why proper diagnosis matters.

What Are the Symptoms of Dog Warts?

Canine papillomas have a fairly distinctive appearance, but symptoms vary depending on the strain of virus, the location of the growths, and the severity of the infection. Here's a symptom checklist organized by progression:

Early Warning Signs (Mild)

• Small, raised bumps on the lips, muzzle, or inside the mouth — typically 0.2 to 1 cm in diameter
• Cauliflower-like texture — warts often have a rough, irregular, frond-like surface
• Pink or flesh-colored growths that may appear singly or in small clusters
• Mild bad breath (halitosis) if warts are developing in the oral cavity
• Occasional drooling beyond the dog's normal baseline

Advanced Symptoms (Moderate to Severe)

• Rapid multiplication — clusters of dozens of warts spreading across the lips, gums, tongue, and palate
• Bleeding or ulceration — warts that are traumatized during eating or chewing may bleed
• Difficulty eating or swallowing (dysphagia) — particularly when oral warts become numerous or large
• Secondary bacterial infection — indicated by pus, foul odor, or increased redness and swelling
• Pain or reluctance to eat — dropping food, chewing on one side, or refusing kibble
• Warts on the eyelids causing squinting, discharge, or corneal irritation
• Warts between the toes (interdigital) causing lameness or excessive licking
• Weight loss in severe oral cases where eating becomes chronically painful

Which Dogs Are Most at Risk for Warts?

Breeds Prone to Canine Warts

While the papillomavirus can infect any dog, veterinary dermatologists have noted higher incidence rates in certain breeds, likely due to genetic factors affecting immune response. According to the American Kennel Club, breeds that appear more susceptible include:

• Cocker Spaniels — prone to both oral and cutaneous papillomas
• French Bulldogs — immune system quirks and skin folds may increase susceptibility
• Greyhounds — frequently reported in shelter and racing populations
• Miniature Schnauzers — predisposed to various skin growths including papillomas
• Pugs — facial skin folds create ideal conditions for viral persistence
• Shih Tzus — common presentation of oral papillomas in young dogs
• Whippets — similar to Greyhounds, higher incidence in group-housed dogs

It's worth noting that breed predisposition doesn't guarantee your dog will develop warts — it simply means that, statistically, these breeds appear in veterinary dermatology records more frequently for papilloma cases. Mixed-breed dogs are certainly not immune.

How Are Dog Warts Diagnosed?

In many cases, an experienced veterinarian can diagnose canine warts through visual examination alone. The classic cauliflower-like appearance of oral papillomas in a young dog is highly characteristic. However, when warts appear in unusual locations, look atypical, or don't resolve as expected, further diagnostics become necessary.

The Diagnostic Process

1. Physical Examination ($50-$80): Your vet will visually inspect the growths, note their location, size, number, and texture. They'll palpate surrounding tissue and check for additional growths elsewhere on the body.
2. Fine Needle Aspirate or Cytology ($75-$150): If the growth's appearance is ambiguous, the vet may take a small cell sample using a fine needle. This is examined under a microscope to look for characteristic changes in epithelial cells associated with papillomavirus infection.
3. Surgical Biopsy ($200-$400): For growths that don't look like typical papillomas — particularly in older dogs where cancerous growths like squamous cell carcinoma or melanoma are a concern — a tissue biopsy is sent to a veterinary pathologist. This is the gold standard for definitive diagnosis.
4. Blood Work ($80-$200): A complete blood count (CBC) and chemistry panel may be recommended to assess overall immune function, especially in recurrent or widespread cases, or in senior dogs where underlying disease could be suppressing immunity.
5. PCR Testing ($150-$300): Polymerase chain reaction testing can identify the specific strain of papillomavirus, though this is rarely needed in routine cases. It's more commonly used in research settings or refractory cases.

Can Dog Warts Be Treated or Cured?

The good news: most canine papillomas resolve spontaneously as the dog's immune system mounts an effective response. In puppies, this typically happens within 4 to 12 weeks of the warts first appearing. However, treatment becomes necessary when warts are numerous, painful, bleeding, interfering with eating or vision, or failing to resolve on their own.

About the Autogenous Vaccine

For dogs with severe, persistent, or recurrent papillomatosis, your veterinarian may recommend an autogenous (custom) vaccine. This involves taking a tissue sample from your dog's own warts, processing it in a laboratory, and creating a vaccine tailored to the specific papillomavirus strain affecting your dog. The vaccine is then administered in a series of injections over several weeks. While not guaranteed, this approach has shown promising results in dogs that haven't responded to other treatments. Your vet will determine whether this option is appropriate for your dog's specific case.

Home Care and Daily Management

Whether you're waiting for warts to resolve naturally or managing your dog post-treatment, proper home care makes a meaningful difference in outcomes and comfort.

For Dogs Under Watchful Waiting

• Monitor growth count weekly: Take photos every 3-4 days to track whether warts are increasing in number or size, or beginning to shrink and dry out
• Soft food if needed: If oral warts are causing mild discomfort eating kibble, soak dry food in warm water or broth (no onion or garlic) for 10-15 minutes, or temporarily switch to a high-quality canned food
• Avoid shared toys and bowls: Since CPV is contagious between dogs, remove shared chew toys and use separate water bowls if you have multiple dogs
• Don't pick at or squeeze warts: This can cause bleeding, secondary infection, and potentially spread the virus to adjacent skin
• Support immune health: Ensure your dog is on a nutritionally complete diet (look for the AAFCO statement of nutritional adequacy). Discuss immune-supportive supplements like omega-3 fatty acids (EPA/DHA at 20-55 mg/kg combined daily) with your vet

Post-Surgical or Cryosurgery Care

• Elizabethan collar (cone): Prevent your dog from pawing at or licking treatment sites — typically required for 7-14 days
• Keep sites clean and dry: Gently clean around the area with a vet-recommended antiseptic wipe if directed
• Watch for infection signs: Increased redness, swelling, discharge, or foul odor at the treatment site warrants a follow-up call to your vet
• Restrict activity: Limit vigorous play for 3-5 days after surgical removal to allow incisions to heal
• Administer prescribed medications: Complete the full course of any antibiotics or pain medications as directed — don't stop early because the site "looks fine"

Preventing Spread to Other Dogs

The canine papillomavirus spreads through direct contact with warts or contaminated surfaces. If your dog has active warts:

• Avoid dog parks, daycare, and grooming facilities until warts have fully resolved
• Wash bedding in hot water (at least 140°F / 60°C) weekly
• Disinfect food and water bowls daily with a diluted bleach solution (1 part bleach to 32 parts water), then rinse thoroughly
• Keep affected dogs separated from immunocompromised or very young dogs in the household
• The incubation period is typically 1 to 2 months, so even after visible warts resolve, practice good hygiene for an additional 4-6 weeks

Treatment Costs and Financial Planning

The cost of treating canine warts varies dramatically based on severity, the number of warts, and the treatment approach required. Here's a realistic breakdown based on 2026 veterinary pricing in the United States:

Most pet insurance policies cover wart treatment if it's not a pre-existing condition. If your dog is enrolled in a comprehensive plan, surgical removal and cryosurgery are typically covered at 70-90% reimbursement after your deductible. Check your policy's terms regarding dermatological conditions.

Prognosis and Life Expectancy

The prognosis for dogs with papillomas is overwhelmingly positive. These are benign growths, and the condition does not shorten a dog's life expectancy in the vast majority of cases.

In extremely rare cases, chronic papillomavirus infection in dogs can lead to squamous cell carcinoma in situ — a form of skin cancer. This has been documented primarily in dogs with long-standing, unresolved papilloma infections, often combined with UV light exposure on sparsely-haired skin. This is one more reason to have persistent, non-resolving warts evaluated by your veterinarian rather than simply waiting indefinitely.

When to See the Vet: Red Flag Symptoms

When in doubt, schedule the appointment. A routine exam for wart evaluation typically costs $50-$80 and provides peace of mind plus a professional treatment plan. Early intervention in problematic cases prevents more expensive and invasive treatments down the road.

Frequently Asked Questions

Can I catch warts from my dog?

No. The canine papillomavirus is species-specific. You cannot contract warts from your dog, and your dog cannot catch human warts from you. The viruses that cause papillomas in different species are entirely distinct and cannot cross the species barrier.

Can I use over-the-counter human wart remover on my dog?

Absolutely not. Human wart removal products contain salicylic acid, cryotherapy agents, or other compounds formulated for human skin. These can cause chemical burns, toxicity, and severe irritation on canine skin and mucous membranes. Some ingredients are toxic if licked and ingested. Never apply human medications to your dog without explicit veterinary direction.

Will my dog's warts go away on their own?

In most cases involving young, healthy dogs, yes. Approximately 70-80% of canine oral papillomas resolve spontaneously within 4 to 12 weeks as the immune system develops antibodies against the virus. However, "most cases" doesn't mean "all cases" — some dogs require treatment, and any growth that persists beyond 3 months should be evaluated by a veterinarian to confirm it's actually a wart and not something more concerning.

How long is a dog with warts contagious to other dogs?

A dog is considered contagious from the time warts first appear until they have completely resolved and the skin has healed. The incubation period after exposure is typically 1 to 2 months, meaning other dogs in contact may not show signs for weeks. Keep your dog separated from other dogs during active infection and for 2-4 weeks after all visible warts have disappeared.

Are there any vaccines to prevent dog warts?

There is no commercially available universal vaccine to prevent canine papillomas in the general dog population. The autogenous vaccine (custom-made from your dog's own wart tissue) is used as a treatment for existing infections, not as a preventive measure. The best prevention is maintaining your dog's overall immune health through proper nutrition, regular veterinary care, and minimizing exposure in high-risk environments when possible.

My dog's wart changed color — should I be worried?

Color changes in a wart-like growth warrant a prompt veterinary visit. While normal papillomas can vary from pink to flesh-toned to slightly gray, a growth that becomes darkly pigmented (brown, black, or purple), develops irregular borders, or grows rapidly could be a different type of tumor entirely, including malignant melanoma or mast cell tumor. Don't wait — have it evaluated within 48 hours.

Can warts grow back after treatment?

Individual warts that are surgically removed or destroyed through cryosurgery typically do not regrow at the same site. However, if the underlying viral infection is still active, new warts can appear in different locations. This is more common in dogs with compromised immune systems. Once the immune system fully clears the virus, recurrence is unlikely — most dogs develop lasting immunity to the specific strain they encountered.