Is It a Dog Wart or a Skin Tag? How to Tell the Difference [6 Pictures to Compare]

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This article was updated on January 16th, 2024

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Warts and skin tags are common occurrences on our pup’s skin. At first glance, they may appear the same, but a closer look will show that skin tags tend to dangle from the skin from a narrow stalk, while warts will have a thicker base. In this article, we’ll take a closer look at these differences (with pictures).

Differences Between Warts and Skin Tags (Summary Table)

WartsSkin Tags
AppearanceRounder, with a thicker base close to the skin.
Singular or in a cluster of several lumps
Tear-shaped and hang from a stalk.
ColorDarker or lighter than the surrounding skin. Warts can vary in color.Typically flesh-colored.
LocationLikely to show up on the face and feet.Congregated in areas of friction or irritation (e.g. between the legs and body, on the face, chest and the lower legs).

What Do Dog Warts Look Like?

Warts on dogs are benign lumps caused by an infection with the canine papillomavirus. They are typically harmless and will even go away on their own within a couple of months. However, it’s easy to confuse a dog wart with a more serious cancerous lump, so it’s always best to have lumps or bumps checked out by your veterinarian.

dog wart
Wart on a dog
  • Warts may come singular or in a cluster of several.
  • They tend to be lighter or darker than skin color, and
  • lumpy like a head of cauliflower.

They can pop up anywhere on the skin, but are more commonly found around the mouth, eyes, and toes.

Warts are contagious, so it’s possible that all of your canine companions can show up with warts at the same time. Warts tend to affect older dogs and puppies since these groups have weaker immune systems that can’t fight off the virus as easily.

What Do Skin Tags Look Like?

Skin tags are another benign lump that can show up on your dog’s skin. Skin tags are flesh-colored and small. They usually dangle away from the body on a stalk that is smaller around than the lump. Skin tags may be lumpy or smooth and can grow to the size of a grape or bigger.

skin tag growing over a dog's skin

The exact cause of skin tags isn’t known, but it is believed to have to do with persistent skin irritation or pressure. For that reason, skin tags are more commonly found on the chest, lower legs, and face, or anywhere there is friction from skin rubbing on skin.

Skin tags are usually an older dog problem and are more common on large and giant breeds. However, they can show up on any dog, and obesity can play a role as well.

skin tag on dog
Image showing a skin tag on a dog

How Are Skin Tags Different From Dog Warts?

Small, flesh-colored lumps on your dog’s skin can be hard to differentiate. However, there are a few differences that will help clue you in.

Apperance: Skin tags will be more tear-shaped and hang from a stalk, while warts are rounder, with a thicker base close to the skin. Warts may be darker or lighter than the surrounding skin, and skin tags tend to blend in.

Location: The area of your dog’s body can help clue you in as well. Warts can be anywhere, but since they come from a contagious virus, they’re more likely to show up on the face and feet, where they come in contact with other dogs. Skin tags congregate in areas of friction or irritation, so between the legs and body, on the chest and the lower legs.

Your vet will be able to definitely diagnose warts or skin tags by taking a small sample and looking at it under the microscope.

What Should You Do Next?

Any time a fresh, new lump pops up on your dog’s skin, see your veterinarian. This is because cancerous, or malignant, skin tumors can grow and spread very quickly, and you’ll want to know what you’re dealing with to ensure timely treatment. However, benign lumps like warts and skin tags don’t always need treatment.

  • Dog wart treatment: Most warts will go away on their own, so the wait-and-see approach is often used. Sometimes a dog will have many warts, or they’ll be in places that cause irritation. If this is the case, these warts may be removed surgically. In extreme cases, dogs may need immune-boosting medications or wart vaccinations to get rid of these bumps.
  • Skin tag treatment: Skin tags should be monitored for changes in size, shape, and color, as sudden changes can indicate a more serious problem. Those that don’t grow rapidly can be left alone. However, some may be too large or in a spot that causes irritation for the dog. These may need to be removed by your vet.

Learn More:

very itchy spot on a dog Itchy Black Spots On Your Dog? How to Get Rid of the Itch! - One of the most common reasons an owner will book a vet appointment is because of a skin complaint. In… [...]
wart on the muzzle of a dog 20 Pictures of Dog Warts + Veterinarian Advice - Dog warts (Papillomas) are single or clusters of tiny lumps, which can disappear after a few months. They come in… [...]
dog on veterinary table with vet in the back Dog Skin Tags: 10 Pictures + Veterinarian Advice - A skin tag is a benign growth that develops on the surface of your dog’s skin. They vary in appearance… [...]


  • Dr Chyrle Bonk, Veterinarian

    Dr. Chyrle Bonk received her Master in Animal Science from the University of Idaho and her Doctorate of Veterinary Medicine (DVM) from Oregon State University in 2010. She has over 10 years of experience in small animal veterinary practice, working for a veterinary clinic in Idaho.

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Disclaimer: This website's content is not a substitute for veterinary care. Always consult with your veterinarian for healthcare decisions. Read More.

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