# Skin Tags on Dogs: Eyes, Ears, Mouth and More Skin tags in dogs eyes are small, fleshy growths that often sit on the eyelid or the tissue around the eye. They are usually harmless, but a lump near the eye can also be a wart, a cyst, or a tumor, so a veterinarian should look at it. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - A skin tag is a small flap of extra skin. It is usually soft, painless, and the same color as the skin around it. - Growths on the eyelid, in the mouth, or on the belly can look alike but have different causes. Location matters. - Some eyelid masses in dogs are viral papillomas (warts), which can shrink on their own over about 3 months [1]. - A fast-growing, bleeding, or color-changing lump is not a simple skin tag. It needs a vet visit. - Never cut, tie off, or put human products on a growth at home. ## What Are Skin Tags in Dogs? A skin tag is a small piece of extra skin that hangs from the surface. Vets often call these tags or fibrovascular polyps. They are made of normal skin tissue, fat, and a small blood supply. Most are benign, which means they do not spread. Skin tags are different from warts. Warts come from a virus, and they often have a rough, cauliflower-like surface. Skin tags are smooth and soft. Skin tags are also different from tumors, which are made of cells that grow out of control. Some tumors are benign and some are malignant. Because these growths can look so similar, you cannot tell what a lump is just by looking at it. A veterinarian may need to test a sample of cells or tissue to know for sure. ## What Do Skin Tags Look Like in Different Locations? The way a growth looks depends on where it grows. Skin is thin around the eye, thicker on the belly, and moist inside the mouth. That changes the shape and feel of a lump. ### Skin Tags in Dogs Eyes A skin tag on the eyelid often looks like a tiny flap of skin on a thin stalk. It may sit on the upper or lower lid. Some are flat and blend in with the lid. Others stick out and rub against the eye. A growth on the eyelid can also be a viral papilloma. In one reported case, a young dog had several raised, smooth masses on the eyelid along with a corneal mass. Testing showed the growths were viral papillomas [1]. That dog was monitored, and the eye lesion went away on its own about 3 months after it first appeared [1]. A skin tag in dogs eyelid tissue can cause tearing, squinting, or pawing at the face if it rubs the eyeball. Even a small lump can irritate the cornea. ### Skin Tags in Dogs Ears On the ear, a tag may sit on the flap (the pinna) or just inside the ear canal opening. Tags on the ear flap are usually easy to see. Tags inside the canal are harder to spot and may cause head shaking or ear scratching. If your dog is scratching at the ears and face, the growth may not be the only problem. Allergies and infections cause the same signs. See [Dog Itching Ears And Face](/knowledge/veterinary-medicine/clinical-methods/dog-itching-ears-and-face) and [Dog Scratching Ears And Eyes](/knowledge/veterinary-medicine/behavior/dog-scratching-ears-and-eyes) for more on those causes. ### Skin Tags in Dogs Mouth Growths in the mouth are often papillomas, not true skin tags. Canine oral papillomatosis is a benign condition caused by canine papilloma virus 1. It mostly affects young dogs or dogs with a weak immune system [2]. Most cases go away without treatment [2]. Oral warts often look like clusters of small, raised bumps on the lips, gums, or tongue. A single smooth tag is less common in the mouth. Any mouth mass can make eating or chewing uncomfortable. ### Skin Tags in Dogs Belly The belly is a common spot for skin tags. The skin there is soft and often has folds. Tags on the belly are usually found by accident during petting or brushing. They are often harmless. A lump on the belly is not always a tag. A rapidly growing mass on the chest or belly wall of a young dog can be a serious tumor. In one case, a 5-month-old dog had a fast-growing mass on the chest wall that turned out to be a Merkel cell carcinoma, a malignant tumor [3]. That is rare, but it shows why fast growth needs a vet. ## What Signs Should Owners Watch For? Look at the lump itself and at your dog's behavior. Both matter. Signs that point to a simple tag: - Soft and movable under the skin - Same color as nearby skin - Slow growth or no growth - No pain when you touch it - No bleeding or discharge Signs that need a vet visit: - Fast growth over days or weeks - Bleeding, crusting, or oozing - Color change (dark, red, or black) - Firm, fixed, or irregular shape - Redness or swelling around the eye - Squinting, tearing, or pawing at the face - Trouble eating or dropping food - Bad breath with a mouth mass - Weight loss or low energy A growth that rubs the eyeball can damage the cornea over time. Do not wait to see if it goes away on its own. ## What Causes Skin Tags and Similar Growths? The exact cause of a true skin tag is not fully known. They tend to appear more often in middle-aged and older dogs. Some breeds seem to get more skin growths than others. Friction and skin folds may play a role. Warts have a clear cause. They come from papillomavirus infection. Young dogs and dogs with a weakened immune system are at higher risk [2]. The virus spreads between dogs through direct contact. Some lumps that look like tags are actually tumors. Skin tumors can be benign or malignant. A malignant tumor can invade nearby tissue or spread to other parts of the body. Merkel cell carcinoma is one example, and it can be mistaken for other skin growths in young dogs [3]. Sun exposure may raise the risk of some eye and eyelid tumors. In one case, a 9-year-old dog with a history of eye injury developed a pigmented squamous cell carcinoma on the cornea [4]. That dog also had a papillomavirus infection found in the tumor tissue [4]. This does not prove the virus caused the cancer, but it shows that eye growths can have more than one factor behind them. ## How Does a Veterinarian Diagnose These Growths? Your vet will start with a full exam. They will look at the growth, measure it, and check the eye, ear, or mouth around it. They will also feel the nearby lymph nodes. Next steps may include: - Fine needle aspirate. The vet inserts a thin needle into the lump and looks at the cells under a microscope. - Biopsy. A small piece of tissue is removed and sent to a lab. This gives a definite diagnosis. - Eye exam. If the growth is near the eye, the vet may check the cornea and tear production. - Imaging. X-rays or other scans may be used if cancer is suspected. A biopsy is the only way to know for sure what a growth is. In the eyelid papilloma case, the diagnosis was confirmed by histopathology, which is lab testing of the tissue [1]. If you are not sure whether a lump is a tag or a tumor, see [Dog Skin Tag or Tumor? How to Tell and What to Do](/knowledge/veterinary-medicine/skin-allergy-and-ear-care/dog-skin-tag-or-tumor). It walks through the differences in plain terms. ## Treatment Options for Skin Tags and Similar Growths Treatment depends on what the growth is, where it is, and whether it bothers your dog. ### Watch and Wait Small, harmless tags that do not touch the eye or cause pain may not need treatment. Your vet may measure the growth and recheck it in a few months. For viral papillomas, monitoring is often the right choice. In one case, a corneal viral papilloma in a young dog went away on its own about 3 months after it first appeared [1]. ### Surgical Removal If a tag rubs the eye, bleeds, or grows fast, your vet may remove it. Surgery is also used for tumors. The goal is to remove the whole mass and get clean margins, which means no tumor cells are left at the edge of the cut. In the Merkel cell carcinoma case, wide surgical removal with clean margins led to no recurrence over at least 20 months [3]. ### Other Treatments Some growths are treated with topical or injected medicines. For severe oral papillomatosis, surgery alone has a high risk of the warts coming back. In one case, a dog with severe oral warts was treated with surgery plus topical mitomycin C, and the warts did not return over 1 year [2]. Another report described a dog with an oral papilloma that was treated with a molecular iodine solution at a concentration of 300 ppm, applied for 1.5 minutes twice daily. The lesion shrank and was gone by 4 weeks, with no recurrence after 1.5 years [5]. These are specific cases, not general recipes. Never try these treatments at home. The dose and method must be set by a veterinarian based on your dog's weight and health. | Location | Common look | Common causes | Typical next step | |---|---|---|---| | Eyelid or eye area | Small flap, smooth bump, or raised mass | Skin tag, viral papilloma, tumor | Vet exam, possibly biopsy [1] | | Ear flap or canal | Soft tag or rough wart | Skin tag, papilloma, irritation | Vet exam, check for infection | | Mouth | Clusters of bumps or a single lump | Oral papilloma, other growth | Vet exam, biopsy if needed [2] | | Belly or chest | Soft tag or firm lump | Skin tag, cyst, tumor | Vet exam, measure and monitor [3] | ## Recovery, Outlook, and Long-Term Management For a simple skin tag that is removed, healing is usually quick. Most dogs go home the same day. Keep the area clean and stop your dog from scratching or rubbing it. Your vet will tell you when to return for a check. For viral papillomas, the outlook is good. Most go away on their own, especially in young dogs [2]. Some dogs need treatment if the warts are severe or do not clear up. For tumors, the outlook depends on the type. Benign tumors often do not come back after removal. Malignant tumors have a better outlook when they are found early and removed completely. In the Merkel cell carcinoma case, the dog had no recurrence for at least 20 months after surgery [3]. Long-term management includes: - Check your dog's skin, ears, mouth, and belly once a month. - Take a photo of any lump with a ruler next to it. This helps you track growth. - Keep vet recheck appointments, even if the lump looks the same. - Tell your vet about any new lump right away. ## Can You Prevent Skin Tags in Dogs? You cannot fully prevent skin tags. They are part of aging for many dogs. You can lower the risk of some other growths and catch problems early. - Keep your dog's weight in a healthy range. Extra weight adds skin folds and friction. - Protect light-colored dogs from too much sun, since sun exposure may play a role in some eye and skin tumors [4]. - Keep up with vaccines and wellness visits. - Limit close contact with dogs that have visible warts, since papillomavirus spreads between dogs [2]. - Check the eyes, ears, mouth, and belly during grooming. - If your dog has allergies that cause scratching, treat them. Constant scratching can irritate growths. See [Dog Itchy Skin Ears And Paws](/knowledge/veterinary-medicine/clinical-methods/dog-itchy-skin-ears-and-paws) for help with itchy skin. ## Limitations and When to Contact a Veterinarian No article can tell you what a specific lump is. Only a veterinarian who examines your dog can do that. Individual cases need a veterinarian. Contact your vet the same day if: - The growth is bleeding and will not stop. - Your dog is squinting, holding the eye closed, or the eye looks cloudy. - Your dog cannot eat or is dropping food because of a mouth growth. - The lump grew quickly since you last looked. Go to an emergency clinic now if: - The eye is bulging or very swollen. - Your dog is in severe pain or cannot open the eye at all. - There is heavy bleeding from the growth. - Your dog is having trouble breathing. Schedule a routine visit if: - You find a new lump anywhere on the body. - A known tag changes in size, color, or shape. - Your dog has a mouth growth but is still eating and acting normal. - You want a baseline check on a growth that has been there for a while. ## Frequently Asked Questions ### Are skin tags on a dog's eye dangerous? Most are not dangerous, but a growth near the eye can rub the cornea and cause damage. Some eyelid masses are viral papillomas that go away on their own, while others are tumors. A vet should examine any growth on or near the eyelid. ### Can I remove a skin tag at home? No. Cutting, tying, or freezing a tag at home can cause bleeding, infection, and pain. It can also leave tumor cells behind if the lump is not a simple tag. Removal should be done by a veterinarian. ### Do skin tags in a dog's mouth go away on their own? Many oral papillomas in young dogs do go away without treatment. Severe cases may need surgery or other treatment because the warts can spread and cause discomfort. Your vet can tell you which situation your dog is in. ### How fast can a harmless-looking lump turn out to be cancer? Some malignant tumors grow quickly, within weeks. A mass on a young dog's chest wall was found to be a malignant tumor after surgery. Fast growth is a reason to see your vet right away. ### Should I take a picture of my dog's skin tag? Yes. Take a clear photo with a ruler or coin next to the lump. This gives your vet a way to compare size over time. Bring the photo to your appointment and note the date you took it. ## Related Articles - [Dog Itching Ears And Face](/knowledge/veterinary-medicine/clinical-methods/dog-itching-ears-and-face) - [Dog Skin Tag or Tumor? How to Tell and What to Do](/knowledge/veterinary-medicine/skin-allergy-and-ear-care/dog-skin-tag-or-tumor) - [Dog Tags](/knowledge/veterinary-medicine/clinical-methods/dog-tags) - [Dog Scratching Ears And Eyes](/knowledge/veterinary-medicine/behavior/dog-scratching-ears-and-eyes) - [Dog Itchy Skin Ears And Paws](/knowledge/veterinary-medicine/clinical-methods/dog-itchy-skin-ears-and-paws) - [Dog With Sensitive Skin](/knowledge/veterinary-medicine/clinical-methods/dog-with-sensitive-skin) - [Bleeding or Ulcerated Skin Tag on a Dog: What to Do](/knowledge/veterinary-medicine/skin-allergy-and-ear-care/dog-skin-tag-bleeding) - [Lump on Your Dog's Eyelid or Face: Causes and Next Steps](/knowledge/veterinary-medicine/symptom-guides/dog-eyelid-face-lump) - [Growth on a Dog's Eyelid: Types and When to Remove](/knowledge/veterinary-medicine/skin-allergy-and-ear-care/dog-eyelid-growth) ## References 1. [Report of a self-resolving corneal viral papilloma in a dog](https://pubmed.ncbi.nlm.nih.gov/36733651/). The Canadian veterinary journal = La revue veterinaire canadienne, 2023. 2. [Topical Mitomycin C Application Following Surgical Excision in Canine Oral Papilloma: A Case Report](https://pubmed.ncbi.nlm.nih.gov/40509947/). Veterinary medicine and science, 2025. 3. [Diagnosis and treatment of Merkel cell carcinoma in a puppy: A comparative oncology approach](https://pubmed.ncbi.nlm.nih.gov/42266333/). The Canadian veterinary journal = La revue veterinaire canadienne, 2026. 4. [Primary corneal pigmented squamous cell carcinoma with concurrent canine papillomavirus type 17 infection in a dog](https://pubmed.ncbi.nlm.nih.gov/39933247/). New Zealand veterinary journal, 2025. 5. [Treatment of a Canine Oral Papilloma With Topical Molecular Iodine: A Case Report With Implications for Antiviral Therapy in Humans](https://pubmed.ncbi.nlm.nih.gov/41220439/). Cureus, 2025. ## Further Reading - [Merck Veterinary Manual: Dog Owners](https://www.merckvetmanual.com/dog-owners) - [Cornell Richard P. Riney Canine Health Center: Canine Health Information](https://www.vet.cornell.edu/departments-centers-and-institutes/riney-canine-health-center/canine-health-information) - [American Veterinary Medical Association: Pet Care](https://www.avma.org/resources-tools/pet-owners/petcare)