Can Dogs Get Warts? Complete Guide to Canine Papillomas & Treatment
Can dogs get warts? Yes — canine papillomas are common, especially in puppies and seniors.
Can Dogs Get Warts? Understanding Canine Papillomas
Yes, dogs can get warts. Canine warts — medically known as canine papillomas or canine oral papillomatosis — are benign growths caused by the canine papillomavirus (CPV). Unlike human warts caused by HPV, canine papillomas are species-specific, meaning your dog cannot transmit warts to you or your cat, and you cannot give your dog human warts.
According to the Merck Veterinary Manual, papillomaviruses are highly prevalent across mammalian species, and dogs have at least 20 identified papillomavirus types. Canine warts are extremely common, particularly in two age groups: puppies under 2 years old (oral papillomas) and senior dogs over 7 years (cutaneous warts). In most cases, these growths are harmless and resolve on their own, but certain presentations require veterinary attention.
What Do Warts on Dogs Look Like? Symptom Checklist by Severity
Recognizing canine warts early helps you determine whether home monitoring is sufficient or a vet visit is needed. Warts can appear anywhere on the body, but their location and appearance dictate the urgency of care.
| Severity Level | Symptoms | Location | Action Needed |
|---|---|---|---|
| Mild (Early Stage) | Single or few small, cauliflower-like bumps; flesh-colored or slightly pink; 1-5mm diameter; no discomfort | Lips, muzzle, inside mouth, eyelids, feet, abdomen | Monitor at home; photograph for size tracking |
| Moderate | Multiple warts (5-15+); growths enlarging beyond 1cm; mild bleeding from scratching or chewing; slight odor from oral warts | Oral cavity spreading to tongue and palate; skin folds; between toes | Schedule non-urgent vet appointment within 1-2 weeks |
| Severe (Advanced) | Difficulty eating, swallowing, or breathing; excessive drooling; heavy bleeding; secondary bacterial infection (pus, redness, heat); warts obstructing airway or eyes; rapid multiplication | Throat, larynx, eyelids (blocking vision), widespread body coverage | Urgent vet visit within 24-48 hours |
Oral papillomas in puppies typically appear as small, whitish, rough-surfaced growths on the lips, gums, tongue, and palate. They may look like tiny cauliflowers or sea anemones. Cutaneous (skin) warts in older dogs tend to be firmer, more solitary, and may have a smoother or stalk-like appearance.
Risk Factors: Which Dogs Are Most Likely to Get Warts?
Risk Factors for Canine Papillomas
- Age: Puppies under 2 years (immature immune systems) and seniors over 7 years (declining immunity) are at highest risk
- Immune status: Dogs on immunosuppressive drugs (cyclosporine, prednisone), those with Cushing's disease, or dogs recovering from illness are more susceptible
- Breed predisposition: While any breed can develop papillomas, certain breeds with genetic immune variations may show higher prevalence — Cocker Spaniels, Kerry Blue Terriers, and English Springer Spaniels appear overrepresented in veterinary literature for cutaneous papillomas
- Environment: Dogs in high-contact settings — doggy daycares, boarding kennels, dog parks, shelters — face increased exposure risk
- Broken skin: Wounds, abrasions, or insect bites provide viral entry points
- Brachycephalic breeds: Bulldogs, Pugs, and Boston Terriers may develop warts in skin folds where moisture and friction create ideal conditions
The canine papillomavirus requires a break in the skin or mucous membrane to establish infection. This is why puppies — who explore the world with their mouths and frequently get minor oral scratches from chewing and play — are particularly vulnerable. The incubation period ranges from 1 to 2 months after exposure before visible warts appear.
How Are Canine Warts Diagnosed?
Most canine papillomas are diagnosed through visual examination alone. Experienced veterinarians can often identify typical oral papillomas in puppies with a simple physical exam. However, when growths are atypical, solitary, or appear on an older dog, further diagnostics rule out more serious conditions like mast cell tumors, squamous cell carcinoma, or melanoma.
Diagnostic Process & Estimated Costs
- Physical Examination ($50-$100): Your vet visually inspects the growths, checks location, size, texture, and number. For oral warts, they may need mild sedation to examine the full mouth.
- Fine Needle Aspirate (FNA) ($75-$150): A thin needle extracts cells from the growth for microscopic evaluation. This quick in-clinic test can often differentiate papillomas from mast cell tumors or other neoplasms within minutes.
- Surgical Biopsy & Histopathology ($200-$450): If FNA is inconclusive or the growth looks suspicious, a tissue sample is sent to a veterinary pathology lab. Results typically return in 5-7 business days. This is the gold standard for definitive diagnosis.
- PCR Testing ($100-$250): Polymerase chain reaction testing can identify the specific papillomavirus type. Usually reserved for research or atypical cases where the vet suspects a less common strain.
- Blood Work ($80-$200): A complete blood count (CBC) and chemistry panel may be recommended for older dogs or those with widespread papillomas to check for underlying immunosuppression or systemic disease.
Total diagnostic cost range: $50 for a straightforward visual diagnosis to $600+ if biopsy and blood work are needed.
Any wart-like growth on an older dog (over 7 years) that is solitary, darkly pigmented, rapidly growing, or located on the torso warrants a biopsy. While most turn out to be benign papillomas or sebaceous adenomas, the Merck Veterinary Manual notes that cutaneous squamous cell carcinomas can mimic wart-like growths and require early intervention.
Treatment Options: Medical, Surgical, and Supportive Care
Not all canine warts require treatment. Many puppy oral papillomas resolve spontaneously as the immune system matures — typically within 1 to 3 months. However, intervention becomes necessary when warts interfere with eating, breathing, or vision, become infected, or fail to regress after several months.
| Treatment Method | How It Works | Success Rate | Cost Range | Best For |
|---|---|---|---|---|
| Watchful Waiting (Spontaneous Regression) | Allow the dog's immune system to naturally eliminate warts over weeks to months | ~80-90% in puppies with oral papillomas | $0 (monitoring only) | Young dogs with mild oral papillomas not affecting eating |
| Surgical Excision | Physical removal under local or general anesthesia using scalpel, laser, or electrocautery | 90-95% complete resolution; low recurrence at excised sites | $200-$800 per session (depends on number and anesthesia type) | Solitary warts, warts obstructing airway/vision, suspected malignancy |
| Cryosurgery (Cryotherapy) | Liquid nitrogen freezes and destroys wart tissue; warts slough off within 1-2 weeks | 75-85% after 1-3 sessions | $150-$500 per session | Multiple cutaneous warts; warts in locations difficult to excise surgically |
| Immunomodulatory Therapy (Autogenous Vaccine) | Wart tissue is harvested, processed into a custom vaccine, and injected to stimulate immune response | 60-80% in refractory cases; takes 4-8 weeks to see results | $300-$600 for vaccine creation + follow-up injections | Widespread, persistent papillomas unresponsive to other treatments |
| Oral Azithromycin (Off-Label) | Antibiotic with immunomodulatory properties shown to accelerate papilloma regression in some studies | Variable; limited clinical evidence, some reports of resolution within 2-4 weeks | $30-$80 for a course (weight-dependent) | Cases where surgery is not feasible; used at veterinarian's discretion |
| Topical Imiquimod (Aldara) | Immune response modifier cream applied to cutaneous warts 3x/week to stimulate local immune activity | 50-70% for skin warts; requires consistent application over 4-8 weeks | $60-$120 per tube | Accessible cutaneous warts; not suitable for oral or mucosal locations |
Prognosis: What to Expect After Diagnosis
The prognosis for canine papillomas is overwhelmingly positive. These growths are benign by definition — they do not metastasize or become cancerous. However, the timeline for resolution and quality of life during the wart phase varies significantly.
| Scenario | Expected Outcome | Timeline | Long-Term Impact |
|---|---|---|---|
| Puppy oral papillomas (typical) | Complete spontaneous regression; immunity develops against that specific CPV strain | 4-12 weeks from onset | None — lifelong immunity to that strain; no impact on lifespan |
| Adult cutaneous warts (solitary/few) | May persist indefinitely but remain benign; surgical removal curative for individual growths | Persistent without intervention; 1-2 weeks post-removal healing | Minimal — new warts may develop as dog ages, but each is individually manageable |
| Widespread/persistent papillomatosis | Requires active treatment; may indicate underlying immunosuppression | 2-6 months with treatment; may recur if immune function not addressed | Variable — depends on underlying immune status; investigate for Cushing's, hypothyroidism, or medication effects |
| Warts with secondary complications | Secondary infections respond to antibiotics; obstructive warts resolve with surgery | Infection: 7-14 days of antibiotics; surgical recovery: 10-14 days | Generally excellent once complication is managed |
For the vast majority of dogs, warts have zero impact on life expectancy. Dogs with typical papillomas live full, normal lifespans. The rare exception involves dogs with severe, chronic immunosuppression where widespread papillomatosis indicates a deeper systemic issue — in those cases, prognosis depends on the underlying condition rather than the warts themselves.
Home Care, Prevention, and Daily Management
If your vet recommends watchful waiting for your dog's papillomas, proper home care prevents complications and supports natural immune resolution.
Daily Monitoring Protocol
- Photograph warts weekly with a ruler or coin for scale — track size changes and new growths in a dedicated folder on your phone
- Check for bleeding or ulceration after your dog eats, chews toys, or scratches
- Monitor eating behavior — note any reluctance to eat hard kibble, dropping food, or chewing on one side
- Watch for secondary infection signs: increased redness around the wart, discharge, foul odor, or your dog excessively licking/scratching the area
Preventing Spread to Other Dogs
- Separate affected dogs from household companions during the active wart phase — especially from puppies and senior dogs
- Do not share water bowls, food dishes, toys, or grooming tools between infected and uninfected dogs
- Disinfect shared surfaces with a diluted bleach solution (1 part bleach to 32 parts water) — the papillomavirus can survive on surfaces for hours to days in moist conditions
- Avoid dog parks, daycare, and group training classes until warts have fully regressed
- Wash your hands after handling an affected dog before touching another dog — while you cannot catch the virus, you can mechanically transfer it on your hands
Supporting Immune Function
- Feed a complete and balanced diet meeting AAFCO nutritional standards — look for the AAFCO statement on your food label
- Maintain regular vaccination schedules to prevent concurrent illness that could further suppress immunity
- Discuss omega-3 fatty acid supplementation (EPA/DHA at 20-55 mg/kg combined EPA+DHA daily) with your vet — some evidence suggests omega-3s support immune function
- Minimize stress: maintain consistent routines, provide adequate exercise (30-60 minutes daily for most breeds), and ensure quality sleep
Prevention Strategies
There is currently no commercially available vaccine specifically for canine papillomavirus. Prevention focuses on management:
- Limit exposure in high-risk environments — if your puppy is under 1 year old and not fully immune, be selective about dog-to-dog contact in communal settings
- Keep your dog's immune system strong through proper nutrition, regular exercise, and preventive veterinary care
- Address any underlying health conditions promptly — hypothyroidism, Cushing's disease, and chronic infections can weaken immune defenses
- For dogs with a history of recurrent papillomas, discuss immune-boosting strategies with your veterinarian during annual wellness exams
Treatment Costs: What You'll Actually Spend
Budgeting for canine wart treatment depends heavily on the severity, number of growths, and approach your veterinarian recommends. Here's a realistic cost breakdown based on 2025-2026 US veterinary pricing:
| Scenario | Initial Visit | Diagnostics | Treatment | Follow-Up | Total Range |
|---|---|---|---|---|---|
| Best Case: Puppy oral papillomas, watchful waiting | $50-$100 | $0 | $0 | $50-$100 (recheck) | $100-$200 |
| Moderate: Few cutaneous warts, FNA confirmation | $50-$100 | $75-$150 | $0-$200 (topical) | $50-$100 | $175-$550 |
| Complex: Surgical removal with biopsy | $50-$100 | $200-$450 | $300-$800 | $100-$200 | $650-$1,550 |
| Worst Case: Widespread papillomatosis with autogenous vaccine | $50-$100 | $300-$600 | $300-$600 | $200-$400 (multiple visits) | $850-$1,700 |
Most pet insurance policies cover wart diagnosis and treatment when it's not a pre-existing condition. If your plan includes illness coverage, expect to pay your deductible plus 10-30% coinsurance after reimbursement. Check whether your policy classifies wart removal as medically necessary (covered) versus cosmetic (not covered) — obstructive or infected warts are almost always covered.
- Your dog cannot eat, drink, or swallow normally
- Breathing difficulty, wheezing, or noisy respiration (stridor)
- A wart is bleeding heavily and won't stop with 5 minutes of gentle pressure
- Rapid wart multiplication — dozens of new growths appearing within days
- Signs of infection: pus, severe redness, swelling, heat, or fever (normal canine temp: 101-102.5°F / 38.3-39.2°C)
- A wart changes color to dark black or blue, grows rapidly, or becomes ulcerated — these can indicate malignancy, not papilloma
- Your dog is lethargic, vomiting, or showing systemic illness alongside wart development
Frequently Asked Questions About Warts in Dogs
Can I get warts from my dog?
No. Canine papillomavirus is strictly species-specific. You cannot contract warts from your dog, and your dog cannot catch human warts from you. The virus has evolved to infect only canine cells. Similarly, your dog's warts cannot spread to cats, rabbits, or other household pets.
Are dog warts the same as skin tags?
No, though they can look similar. Skin tags (acrochordons) are smooth, soft, flesh-colored growths on a thin stalk, typically appearing in skin folds. Warts have a rougher, more textured surface and a broader base. Both are usually benign, but any new growth should be evaluated by your veterinarian to confirm the diagnosis — never assume a growth is harmless based on appearance alone.
Should I try apple cider vinegar or home remedies on my dog's warts?
Veterinary dermatologists generally advise against applying apple cider vinegar, tea tree oil, castor oil, or other home remedies to canine warts. While some anecdotal reports suggest improvement, these substances can irritate surrounding healthy skin, cause chemical burns on mucous membranes, and delay proper diagnosis if the growth is actually something more serious. Your safest approach is to get a veterinary diagnosis first, then discuss any complementary approaches your vet approves.
My puppy has mouth warts — should I stop them from playing with other puppies?
Yes, temporarily. Oral papillomas are highly contagious between dogs through direct contact and shared objects. Keep your affected puppy home from puppy classes, dog parks, and playdates until all warts have completely resolved — typically 4-12 weeks. This protects other puppies and prevents reinfection cycles. Once the warts have fully regressed, your puppy will have developed immunity to that specific strain.
How do I know if a growth is a wart or cancer?
Visual appearance alone cannot reliably distinguish a benign papilloma from a malignant tumor. Red flags that suggest possible malignancy include: rapid growth over days to weeks, dark pigmentation (black, blue, or irregular coloring), ulceration or bleeding without trauma, firm attachment to underlying tissue, and location on the torso or nail bed. Any of these characteristics warrant immediate veterinary evaluation with biopsy. The AVMA recommends having any new lump or bump examined by a veterinarian regardless of appearance.
Will warts come back after treatment?
Recurrence depends on the scenario. Puppies who recover from oral papillomas develop lasting immunity to that specific CPV strain and rarely get the same type again. However, because there are over 20 known canine papillomavirus types, exposure to a different strain could theoretically cause new warts. Adult dogs who develop cutaneous warts may continue to get occasional new growths as they age, but each can be individually managed. Dogs with underlying immunosuppression may experience recurrent outbreaks until the root cause is addressed.
This article is for informational purposes only and does not replace professional veterinary care. Always consult your veterinarian for diagnosis and treatment decisions regarding your dog's health. If you suspect your dog has ingested a toxic substance, contact the ASPCA Animal Poison Control Center at (888) 426-4435 (24/7, consultation fee applies).
Jonas Cole
All our authors care for dogs every day — read more of their work on the authors page.
