Warts in dogs are benign growths caused by papillomaviruses, which often appear as cauliflower-like protrusions on the skin or mucous membranes. They are most common in young dogs and older animals with weakened immune systems. Although warts are usually harmless and disappear on their own, in some cases they can cause discomfort and require treatment. In this article, you’ll discover how to recognise, treat and prevent warts in dogs.
What are warts in dogs?
Warts in dogs are small, benign tumours often caused by an infection with the canine papillomavirus (CPV). This virus spreads through direct contact or contaminated surfaces and is most common in young dogs and animals with a weakened immune system.
What do warts in dogs look like?
Warts vary in shape, colour and size, but usually have a:**
- Cauliflower-like appearance with a rough, bumpy texture.
- Diameter ranging from a few millimetres to one centimetre.
- Colour ranging from pink to dark brown or black.
Where do warts occur in dogs?
Warts often appear on:**
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The mouth and lips (especially in young dogs, caused by oral papillomavirus infections).
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The eyelids and nose.
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The legs and paws (can cause lameness).
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The abdomen and groin.
What causes warts in dogs?
Canine papillomavirus (CPV) is the cause of most warts in dogs. This virus spreads via:**
- Direct contact with infected dogs.
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Sharing toys, water bowls or sleeping areas.
- Minor skin damage, which makes it easier for the virus to enter.
Some breeds are genetically more prone to warts, such as the:
- Shar-Pei
- Cocker Spaniel
- Miniature Schnauzer
Although the virus often causes no problems in healthy dogs, animals with a weak immune system are more likely to develop warts.
How do you recognise warts in dogs?
What symptoms indicate warts in dogs?
Symptoms of warts vary depending on their location. Some common signs include:**
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Hard or soft lumps that appear suddenly.
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Difficulty eating if the warts are in or around the mouth.
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Itching or irritation, especially if the wart is damaged.
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Bleeding or inflammation if a wart becomes infected.
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Lameness if warts are on the legs or between the toes.
How can you tell the difference between warts and tumours?
Not all skin growths in dogs are warts. Malignant tumours, such as mast cell tumours or melanomas, can be mistaken for warts.
Look out for the following characteristics:**
| Characteristics |
Warts |
Tumours |
| Structure |
Cauliflower-like, rough |
Hard or soft mass, not always lumpy |
| Growth |
Often sudden and rapid |
Slow and progressive |
| Colour change |
Rare, usually stable |
May turn red, black or purple |
| Pain |
Usually painless |
May be sensitive or painful |
If in doubt, or if there are changes in size, colour or shape, it is advisable to consult a veterinarian.
How do you treat warts in dogs?
Can warts disappear on their own?
Yes, in most cases warts disappear on their own within 6 to 8 weeks due to a natural immune response. In some dogs, however, this process can take months.
When is veterinary treatment necessary?
Veterinary assistance is recommended if:**
- Warts are bleeding, become infected or cause pain.
- The dog has difficulty eating or drinking due to warts in the mouth.
- The warts do not disappear after a few months.
What treatment options are available?
| Treatment |
How it works |
When to use? |
| Surgical removal |
Warts are cut away or burned off (laser, cryotherapy) |
For painful or large warts |
| Azithromycin |
An antibiotic that can inhibit the growth of viral warts |
For persistent infections |
| Imiquimod cream |
Stimulates the immune system to fight the virus |
For isolated warts on the skin |
| Interferon therapy |
Stimulates antiviral defence mechanisms |
For widespread infections |
What home remedies are commonly used?
Some owners try
natural treatments such as:**
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Vitamin C supplements (strengthens the immune system).
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Tea tree oil (anti-inflammatory, but use with caution).
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Aloe vera (soothes and moisturises the skin).
These remedies may offer some relief, but are no substitute for veterinary treatment if the warts are causing discomfort.
How can you prevent warts in dogs?
Can you vaccinate a dog against warts?
There is no standard vaccine against the virus that causes warts, but boosting the dog’s natural defences can help.
What prevention tips help reduce the risk?
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Avoid contact with infected dogs (especially in puppy classes and dog parks).
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Feed your dog a healthy diet rich in vitamins and antioxidants.
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Regularly disinfect water bowls, toys and beds.
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Check your dog’s skin and mouth regularly for any suspicious lumps.
How do you know if a dog has recovered?
A healed wart disappears completely without leaving any scars. If new warts appear or existing warts continue to grow, further medical follow-up may be necessary.
Conclusion
Warts in dogs are common and are usually caused by the canine papillomavirus. They have a characteristic cauliflower-like appearance and often appear around the mouth, eyes, paws or abdomen. Although warts usually disappear spontaneously within 6 to 8 weeks, in some cases they can cause discomfort and require treatment. Surgical removal, medication such as azithromycin, or immunostimulatory therapies may help with persistent, painful, or infected warts.
By keeping your dog healthy, limiting direct exposure and carrying out regular skin checks, you can reduce the risk of warts. If you are unsure about a skin growth, a visit to the veterinarian is always the safest option.
