Guide · 5 min read

Can Dog Warts Spread?
Are They Contagious?

First published May 2015 · Revised 2026From the Warts & Papillomas shelf

Most of us know what a wart looks like on skin. Dog warts are a different animal, and the oral kind spreads the way dogs live: mouth first, wherever dogs are nose to nose. Below: what spreads, what doesn't, and one family's two weeks.

Two kinds of dog warts

Via saliva, oral papilloma warts
can be very contagious.

Most of us know a wart when we see one, at least on skin: a flat, raised, hardish bump, and plenty of us have had one ourselves. Dog warts are a bit different. There are a few types, but nearly all of them come from the same place: a virus called the papillomavirus.

In over twenty-five years of taking these calls, we've rarely heard from a family about a skin wart. The oral kind, oral papillomas, are the ones that worry families. They're the obvious, ugly, lumpy growths in and around the mouth, and often the throat. They look like little cauliflowers, they multiply fast, and when they reach the throat they can get in the way of eating and breathing.

The flatter warts on the skin go by the name papillomatosis. Tucked under the coat, they're easy to miss and rarely bother anyone. Not everyone agrees with us on this next part, but to us it only makes sense that either kind can spread, to other parts of the body or to other dogs.

How it travels

Dogs lick everything.
That's how it travels.

You'll find articles that say not to worry: dog warts can't spread, not on the same dog and not to other dogs, and they'll go away on their own. That may be true for skin warts, some of the time. For oral warts, we don't buy it. Just think about how much a dog licks, of everything, all day. Every lick moves the virus around inside the mouth, and every shared toy or bowl carries it to the next dog.

Short of something airborne like kennel cough, is there an easier way for a virus to get around? Saliva is everywhere dogs gather. Think of how many dogs are chasing the same ball, the same Frisbee, the same stick, or nosing through the same dropped food and wrappers. Saying dogs can't pass a virus to each other just doesn't square with how dogs live.

Dog parksPlaygroundsDog eventsKennels & daycareThe groomerEven the vet's office

So the argument is simple: a virus causes dog warts, and viruses spread. A dog with oral papilloma warts (the five facts are here) should be treated as contagious, the same way you'd keep a kid with a cold home from school. Put oral and saliva side by side and you can see how easily and quickly it travels. And since the same virus is likely behind skin warts too, a dog who picks it up could end up with either kind, or both.

One thing to hold onto: this virus is dog-specific. You won't catch warts from your dog. People have their own papilloma virus, and it has nothing to do with the one in your dog's mouth.

The two usual options

Cut it out, or wait it out.

As with most dog viruses, puppies and older dogs are the most likely to get them, because their immune systems have less to work with. What the vet suggests usually depends on where the warts are. In an uncomfortable spot, like the mouth, the usual offer is surgery. Be aware that this can backfire: as the open wounds try to heal, the virus often spreads quickly to other parts of the body. If the warts are somewhere less bothersome, the vet may suggest waiting it out. Much like canine influenza, keeping your dog comfortable while the virus runs its course can be the better choice, if it does in fact run its course.

Wherever the warts are, it's hard to sit and wait while you know your dog is fighting a virus. We talk with families in exactly this spot every week. We believe a well-fed, well-supported body can do a lot of its own healing, so we'd rather work on this from the inside, and we're happy to report our customers have experienced great success. The families on this shelf have shared what that looked like for their dogs, with dates on the photos.

One family's two weeks

Joan and Pooh Bear

Meet Joan and her sweet pit mix, Pooh Bear. Joan sent us a short note and a couple of pictures: Pooh Bear before Nzymes, and Pooh Bear less than two weeks in.

Pooh Bear, a brindle pit mix, her face held gently, a wart on her lower lip
Pooh Bear, before. The wart on her lip.
Close-up of the cauliflower-textured papilloma wart on Pooh Bear's lip
Up close: the "gross looking thing" the vet called a dog wart.
Pooh Bear's lip on day 13, the wart nearly gone
Day 13. In Joan's words, "nearly vanished."

"My sweet pit mix, Pooh Bear, developed a gross looking thing on her lip, diagnosed by our vet as a 'dog wart' that 'would probably go away on its own in a couple weeks.' Well, a month or two later it was just bigger and uglier. My niece told me about Nzymes. I had my doubts but gave it a try. In just over two weeks Pooh Bear's disgusting wart has nearly vanished. I've got the pics to prove it. And she LOVES the special treats. Thank you Nzymes! I am now a firm believer."

Joan· Pooh Bear's family, in her own words

Stories like Joan's keep us going, and they say something true about what the body can do when it's given what it needs. Nutrition gets overlooked as a road back to health, for small problems and hard ones alike, mostly because it isn't a quick fix. But as Joan found, a few weeks can change a lot. Addie's sixteen days tell the same story.

AddieDukeRyleeEmma
Twelve families photographed the way through. Meet them on the shelf →
Questions families ask
Can my dog give warts to my other dog?

Honestly, yes. The virus travels in saliva, and dogs in the same house share water bowls, toys, and faces. It's worth separating bowls and toys while growths are present. The dog who gets them is usually the one whose immune system was already running behind, so if you have two dogs, it's worth supporting both.

Can I catch warts from my dog?

No. The dog papilloma virus stays with dogs. People have their own form of papilloma virus, and the two don't cross. Cats, birds, and other pets can't catch it from a dog either.

Should I stop going to the dog park?

While the growths are present, yes, and daycare, group play, and shared toys along with it. It's a kindness to the other dogs, and it's probably how the virus found your dog in the first place. Once the growths are gone and the immune system has had time to catch up, normal life resumes.

If we remove the wart, does that stop it spreading?

Not reliably. Surgery takes off the growth, but it doesn't touch the virus, and the open wound left behind can give the virus more places to take hold as it heals, which is exactly the rapid spread many families describe afterward. We'll never bar the vet door, but it's one of the reasons we suggest supporting the immune system before anything is cut.

How fast do things change once the immune system gets help?

Joan saw Pooh Bear's wart nearly gone in just over two weeks; Addie's family photographed sixteen days. Other dogs take longer; every dog starts from a different place. The dated photos from twelve families on this shelf give you something real to compare to, and if you'd like an honest read on your own dog's situation, the call is free.

You've read all three guidesMeet the twelve families on the Warts shelf →
Questions along the way

Not sure what you're looking at?
We're a phone call away.

Warts are one of the calls we take most often. Whether you're still deciding, or you've started and something has you second-guessing, tell us where the growths are, how fast they're moving, and what your dog is taking, and we'll tell you honestly what it sounds like, including whether a vet visit makes sense.

The consultation is a scheduled half hour with the people who have walked hundreds of families through this, so you get real time and real answers instead of a rushed phone call. It's free, and it always will be.

Mike Stan Brenda Kara
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