Short answer: most warts on dogs don't need treating at all. The typical wart is a viral papilloma — a small, cauliflower-shaped growth caused by canine papillomavirus — and in a healthy dog it usually disappears on its own within one to five months as the immune system catches up to the virus. The right move for most owners is to leave it alone, keep an eye on it, and have your vet confirm it's actually a wart and not something else. Treatment gets involved only when a wart bleeds, gets infected, interferes with eating, or refuses to go away.
I'm Preston Smith, co-founder of Bully Sticks Central. I'm not a veterinarian, and nothing here replaces a real exam. But this question comes up constantly from our customers, so here's the plain version of what's actually known.
What causes warts on dogs?
Canine warts are caused by papillomaviruses, which spread through direct contact with an infected dog or with contaminated shared items — bowls, toys, bedding, kennel surfaces. They are species-specific: your dog can't give you warts, and you can't give warts to your dog.
Two groups of dogs get them most:
- Puppies and young dogs under two. Their immune systems haven't met the virus before. Oral papillomas show up on the lips, gums, tongue, or muzzle, often several at once. This is by far the most common scenario, and it's essentially a rite of passage.
- Older or immune-suppressed dogs. Dogs on immunosuppressive medication, or seniors with weakened immunity, can develop papillomas that stick around longer.
Not every bump is a wart. Older dogs commonly grow sebaceous adenomas — benign, wart-like skin lumps that have nothing to do with a virus and won't resolve on their own. Skin tags, cysts, histiocytomas, and, less often, mast cell tumors can all be mistaken for warts by eye. That's the whole reason step one is a vet, not a treatment.
How do you treat a wart on a dog?
1. Get it identified first
A veterinarian can usually diagnose a classic oral papilloma on sight. Anything ambiguous — a growth on an older dog, an odd color, an unusual location — warrants a fine-needle aspirate or biopsy. According to VCA Animal Hospitals, most canine viral papillomas regress spontaneously and require no intervention.
2. In most cases, wait
Watchful waiting is the standard approach for young dogs with oral papillomas. The immune system typically clears them in one to five months. During that window, keep your dog away from dog parks and daycare if your vet advises it, since the virus is contagious to other dogs.
3. Treat only when there's a reason
Your vet may step in if a wart is bleeding, ulcerated, infected, growing fast, blocking eating or swallowing, or hanging on past several months. Options they may discuss include surgical removal, cryosurgery (freezing), electrocautery, laser removal, or — for stubborn, widespread cases — medications such as azithromycin or interferon. All of these are veterinary decisions, not home projects.
4. Support the immune system, don't overhaul the diet
Since papillomas are cleared by immunity, general health matters: good nutrition, decent sleep, low stress, appropriate exercise. What it does not mean is loading your dog with unproven supplements. If you want to help, keep the diet clean and boring — real food, and treats that don't fight it.
What should you never do?
Do not use human wart removers on your dog. Over-the-counter salicylic acid and freezing kits are formulated for human skin and are caustic and potentially toxic if a dog licks the site — which, on a muzzle or a paw, they always will. The ASPCA Animal Poison Control Center fields calls about exactly this kind of well-meant mistake.
Don't cut, pick at, or tie off a growth at home either. And skip the internet's favorite folk remedies — apple cider vinegar, vitamin E oil, thuja — unless your own vet specifically recommends one. There's no reliable evidence they speed anything up, and vinegar on an ulcerated growth is just a burn.
When should you call the vet right away?
- The growth bleeds, weeps, or looks ulcerated
- It's growing quickly or changing color
- Your dog is pawing at it, or it's affecting eating, drinking, or breathing
- Warts appear on an adult or senior dog for the first time
- They've been there longer than five months
- There are so many that they're crowding the mouth
Where treats actually fit in
Chews don't cure warts. Nothing you buy will. But a dog working through any health hiccup doesn't need mystery ingredients, chemical preservatives, and additives on top of it — and if a wart is in or near your dog's mouth, what you hand them to chew matters more than usual. Ask your vet whether to pause hard chews entirely until the growths clear; a hard chew rubbing against an oral papilloma can irritate or bleed it.
When you do resume, this is our whole argument for single-ingredient chews: one ingredient, 100% real meat, nothing else to react to or explain. Our bully sticks are 100% natural, fully digestible, no rawhide, and ethically sourced from grass-fed American and Argentinean farms. For dogs who need something that gives a little more, beef trachea is a softer chew that's easier on a tender mouth. Everything we sell is 100% high-quality guaranteed.
The bottom line
Warts on dogs look alarming and are usually nothing. Get the growth identified, resist the urge to treat it yourself, give your dog's immune system a few months to do its job, and call your vet if anything about it changes. The American Kennel Club reaches the same conclusion: for the vast majority of dogs, patience is the treatment.
This article is for general information and is not veterinary advice. Always consult your veterinarian about your dog's health.
This post was last updated at July 17, 2026 15:47
