# Lump on Your Dog's Paw or Paw Pad A dog lump on paw pad is usually a cyst, a foreign-body reaction, or inflamed tissue between the toes, and it often causes limping. Many small lumps improve with simple home care, but some need a veterinarian to rule out infection, bone involvement, or cancer. This article is educational and is not a substitute for veterinary diagnosis or treatment. ## Quick Answer - Most paw lumps are benign problems like interdigital cysts, furuncles, or foreign-body reactions, and they often show up as swelling, redness, or a firm bump between the toes. - Home soaking in warm water can help a mild, draining lump, but a lump that is growing, deep, bloody, or painful needs a vet visit. - Limping that lasts more than a day or two, or any lump with discharge that smells bad, points to infection or a deeper problem. - Your veterinarian will often start with an exam, a paw squeeze, and sometimes a needle sample or X-ray to see whether bone is involved. - Lumps on the top of the paw, the pad, or between the toes can look alike but have very different causes, so the location matters. ## What a Paw Lump Looks Like and What Is Normal A normal paw pad is smooth, slightly spongy, and cool to the touch. The skin between the toes is thin and usually pale pink or lightly pigmented. Toenails sit flat and do not curl into the pad. When you press gently on a healthy paw, your dog should not pull away. A lump changes that picture. It may be a raised bump on top of the paw, a swollen pocket between two toes, a firm nodule under the pad, or a soft blister that leaks fluid. Some lumps are hairless and shiny. Others are covered in matted fur. A dog lump on the front paw is common because front feet hit the ground first and take more impact. Owners often describe these as a dog pimple on paw pad. That comparison is reasonable for a small, red, raised spot, but a pimple on a paw is not the same as a pimple on human skin. Dog paw skin is thick and tough, so anything that breaks the surface usually means pressure, friction, or infection has been building for a while. Swelling alone is not always a lump. A paw can look puffy after a long walk on hot pavement or after a dog licks the area repeatedly. Matted fur between the toes can also mimic a lump. One study of dogs housed in commercial breeding facilities found matted paw fur in 6.17% of dogs, and older dogs were more likely to have it [1]. If the fur is clumped and the skin underneath is normal, a careful trim may reveal there is no lump at all. ## Main Causes of a Dog Lump on Paw Pad Paw lumps have many causes, and the list runs from harmless to serious. The table below groups the most common ones by what you would typically see and how quickly you should act. | Cause | Typical clues | How urgent | |---|---|---| | Interdigital cyst or furuncle | Swollen, red, painful bump between toes, often draining pus or bloody fluid, limping | See a vet within a day or two | | Foreign body (foxtail, splinter, glass) | Sudden onset, small wound or draining tract, dog licks or chews one spot | Same day if the object is visible or the paw is very painful | | Epidermoid cyst | Firm, smooth, non-painful nodule, may sit under the skin or rarely inside a toe bone | Routine visit unless it grows or causes lameness | | Aneurysmal bone cyst | Firm swelling over a leg bone near the paw, progressive lameness | Prompt visit, needs imaging | | Infection or abscess | Hot, swollen, foul smell, pus, fever, refusal to walk | Same day | | Allergic pododermatitis | Red, itchy paws, often several feet, licking and chewing | Routine visit, but sooner if infected | | Tumor (benign or malignant) | Firm, fixed lump that keeps growing, may involve bone | Prompt visit, needs testing | Interdigital cysts and furuncles are the most common lumps owners notice. They form when hair follicles between the toes become inflamed and rupture. The result is a swollen, tender pocket that drains. Dogs with allergies, thick paw fur, or wet feet are more prone to them. The flooring study found an association between wet paws and other paw problems, with wet paws showing an odds ratio of 6.08 for related conditions [1]. That means keeping feet dry matters more than most owners realize. Foreign bodies are the second big group. A grass awn, thorn, or splinter can work into the pad or between the toes and create a lump that appears overnight. The dog may hold the paw up, lick it constantly, or refuse to let you touch it. If you can see the object, a vet can often remove it with local numbing. If it has already tunneled deep, the dog may need sedation and a small incision. Cysts are another possibility. Epidermoid cysts are non-cancerous lesions with a cavity lined by keratinizing skin cells and filled with layered keratin [2]. They are common in the skin but rarely form inside a toe bone, and when they do, they must be separated from malignant bone tumors that need much more aggressive surgery [2]. Aneurysmal bone cysts are benign but locally aggressive bone lesions that are rare in dogs and can progress or come back after surgery [3]. One report described successful treatment of an aneurysmal bone cyst in a dog using sclerotherapy, an injection of a 3% polidocanol solution into the cyst [4]. Cancer is less common but must stay on the list. A pheochromocytoma, a tumor of the adrenal gland, spread to the bones of all four limbs in one dog and caused lameness and joint swelling over three weeks [5]. That case is unusual, but it shows why a lump that does not fit the usual pattern deserves imaging. Allergies and chronic pododermatitis also cause paw lumps. Dogs with atopic dermatitis can develop long-term paw inflammation, and that inflammation sometimes leads to cyst formation [2]. If your dog also scratches its ears, chews its feet, or has itchy skin elsewhere, allergies are a strong suspect. You can read more about that pattern in [Dog Scratching Ears And Paws](/knowledge/veterinary-medicine/behavior/dog-scratching-ears-and-paws). ## Red Flags That Make It an Emergency Some paw lumps can wait for a regular appointment. Others cannot. Call an emergency clinic right away if you see any of these. - The paw is bleeding heavily and will not stop with five minutes of firm pressure. - The lump is deep, wide, or has torn the pad open. - Your dog cannot bear weight on the leg at all, or the leg looks bent or out of place. - The toes are cold, pale, or blue, which suggests blood flow is cut off. - There is a deep puncture wound, especially from a bite or a foreign object you cannot see. - Your dog has a fever, is vomiting, or seems weak or confused along with the paw problem. - The swelling is spreading quickly up the leg. For poison concerns, contact the ASPCA Animal Poison Control Center at (888) 426-4435 or the Pet Poison Helpline at (855) 764-7661. These numbers are for toxin exposure, not for lumps, but they are worth keeping on your fridge. ## Safe Things You Can Do at Home While Waiting Home care is not a substitute for a diagnosis, but a few simple steps can ease discomfort and keep a mild problem from getting worse. ### Soak the paw Warm water soaks can soften a cyst, draw out debris, and reduce surface bacteria. Use a clean bowl or basin with water that feels like a warm bath, not hot. Let the paw soak for five to ten minutes once or twice a day. Pat the paw dry afterward, including between the toes. Do not add soap, peroxide, or alcohol unless your veterinarian tells you to. ### Keep the paw clean and dry Wet feet feed infection. Rinse mud and road salt off after walks, then dry the paw with a towel. If your dog has long fur between the toes, ask your groomer or vet to trim it so air can reach the skin. The flooring study linked wet paws to a higher odds of paw problems, so drying matters [1]. ### Stop the licking Licking makes almost every paw lump worse. It adds moisture, bacteria, and friction. A soft cone or an inflatable collar can break the cycle. If your dog is a determined licker, you may need a cone whenever you cannot watch. Chewing can also turn a small cyst into an open, infected wound. Learn more in [Dog Chewing Paw Pads](/knowledge/veterinary-medicine/behavior/dog-chewing-paw-pads). ### Check for foreign objects Look between the toes and across the pad with a bright light. If you see a splinter or grass awn sticking out and it comes free with gentle traction, remove it and clean the area. If it is buried, do not dig. You can push it deeper or break it off. ### Limit hard exercise Running on gravel, hot pavement, or frozen ground irritates a sore paw. Short leash walks on grass are fine if your dog is comfortable. If your dog is limping, rest is better than a long hike. ### Do not pop or squeeze a lump Squeezing a cyst or abscess can push infection deeper and cause more pain. Do not apply human acne creams, antibiotic ointments, or essential oils unless your vet approves them. Some of these products are toxic to dogs when licked off. ## What Your Veterinarian Will Check and Test Your vet will start with a full history. They will ask when you first noticed the lump, whether it has changed size, whether your dog is limping, and whether the paw has been wet or injured. They will also ask about itching, diet, and any previous skin problems. The physical exam focuses on the paw. Your vet will look at all four feet, not just the sore one, because allergies and some infections affect multiple paws. They will press gently on the lump, check the toes for swelling, and look for draining tracts. They may use a small instrument to probe the lump and see how deep it goes. From there, testing depends on what they find. - A needle sample (fine needle aspirate) can show whether the lump is filled with fluid, keratin, inflammatory cells, or abnormal cells. - A skin scraping or tape prep can find mites, yeast, or bacteria. - A culture may be sent if there is pus or a deep infection. - X-rays can show whether a bone is involved. This matters because cysts inside bone must be separated from malignant tumors that need wider surgery [2]. - Advanced imaging such as CT may be recommended for bone lesions or when the diagnosis is unclear [3][4]. - A biopsy gives the final answer for solid lumps. Treatment depends on the cause. Cysts may be drained, flushed, or removed. Foreign bodies are pulled out. Infections get antibiotics chosen for the specific bacteria. Allergies get a plan that may include medication, medicated shampoos, or diet changes. Bone cysts may need surgery or, in some cases, sclerotherapy [4]. If cancer is found, your vet will discuss staging and options. For a broader look at lumps anywhere on the body, see [Dog Skin Bumps and Lumps: When to See the Vet](/knowledge/veterinary-medicine/vet-visit-decisions/dog-skin-bumps-lumps). For a deeper dive into paw structure and common paw problems, see [Dog Paw](/knowledge/veterinary-medicine/clinical-methods/dog-paw). ## Prevention and Monitoring You cannot prevent every lump, but you can lower the odds and catch problems early. Keep paws dry. Dry feet are less likely to develop cysts and infections. After walks in wet grass, snow, or rain, towel the paws and check between the toes. Trim paw fur. Long fur traps moisture and debris. A groomer can keep the area around the pads and between the toes short. Use paw protection when needed. Boots help on hot pavement, icy sidewalks, and rough trails. They also keep grass awns and burrs away from the skin. Check paws weekly. Run your fingers over each pad and between each toe. You will learn what normal feels like, so a new lump stands out. Look for redness, swelling, discharge, or a bad smell. Manage allergies. If your dog has itchy skin or recurring paw problems, work with your vet on a long-term plan. Uncontrolled allergies keep the paw inflamed and make cysts more likely [2]. Watch for changes. Measure or photograph a lump every week. Note its size, color, and whether it drains. A lump that doubles in size, changes shape, or starts to bleed needs a vet visit. ## Limitations and When to Contact a Veterinarian This article cannot tell you what your dog's lump is. Only a veterinarian who examines your dog and runs the right tests can do that. Individual cases vary, and a lump that looks harmless can still need treatment. Contact your veterinarian the same day if the lump is new and painful, if your dog is limping, if there is pus or a bad smell, or if you see a wound or foreign object. Go to an emergency clinic now if the paw is bleeding heavily, the leg is deformed, the toes are cold or blue, or your dog cannot stand. Schedule a routine visit if the lump is small, non-painful, and unchanged, but do not wait more than a week or two to have it checked. If a lump is growing, changing, or not healing after a few days of home care, book an appointment. ## Frequently Asked Questions ### Is a lump on my dog's paw pad always cancer? No. Most paw lumps are cysts, infections, or foreign-body reactions, not cancer. That said, some bone tumors and spread from other tumors can appear as paw swelling, so a lump that keeps growing or involves bone needs testing [5]. ### Can I pop a cyst on my dog's paw? No. Popping a cyst can push bacteria deeper, cause more pain, and turn a small problem into an abscess. Let your veterinarian decide whether it should be drained, and keep your dog from licking it in the meantime. ### Why does my dog keep getting lumps between the toes? Repeated interdigital cysts often point to allergies, wet feet, or thick paw fur. The flooring study found that wet paws were linked to a higher odds of paw problems, so drying the feet and managing allergies can reduce how often they come back [1]. ### How long should I soak my dog's paw? Soak for five to ten minutes once or twice a day in warm water, then dry the paw well. If the lump is not better after a few days, or if it gets bigger or more painful, stop soaking and call your vet. ### Can a paw lump go away on its own? Some small cysts and minor foreign-body reactions do settle with soaking, cleaning, and keeping the paw dry. A lump that is growing, bleeding, or causing lameness will not fix itself and needs veterinary care. ## Related Articles - [Dog Skin Bumps and Lumps: When to See the Vet](/knowledge/veterinary-medicine/vet-visit-decisions/dog-skin-bumps-lumps) - [Dog Paw](/knowledge/veterinary-medicine/clinical-methods/dog-paw) - [Dog Chewing Paw Pads](/knowledge/veterinary-medicine/behavior/dog-chewing-paw-pads) - [Dog Chewing Paw Pad Off](/knowledge/veterinary-medicine/behavior/dog-chewing-paw-pad-off) - [Dog Scratching Ears And Paws](/knowledge/veterinary-medicine/behavior/dog-scratching-ears-and-paws) - [Why Is My Dog having lumps on skin? Lipoma vs Mast Cell vs Cyst Diagnosis](/knowledge/veterinary-medicine/symptom-guides/why-is-my-dog-having-lumps-on-skin-lipoma-vs-mast-cell-vs-cyst-diagnosis) - [Lumps and Growths on Your Dog's Paw: What They Mean](/knowledge/veterinary-medicine/symptom-guides/dog-paw-growth-lump-causes) - [Bump on Your Dog's Paw or Paw Pad: Causes and Care](/knowledge/veterinary-medicine/skin-allergy-and-ear-care/dog-bump-on-paw) - [Why Is My Dog's Paw Pad Peeling? Causes and Care](/knowledge/veterinary-medicine/symptom-guides/dog-paw-pad-peeling-causes) ## References 1. [A cross-sectional study to investigate associations between flooring substrates and prevalence of limb and paw abnormalities of dogs housed in commercial breeding facilities](https://pubmed.ncbi.nlm.nih.gov/40046418/). Frontiers in veterinary science, 2025. 2. [Intraosseous epidermoid cyst in the digit of an atopic dog with chronic pododermatitis: case report](https://pubmed.ncbi.nlm.nih.gov/41695825/). Brazilian journal of veterinary medicine, 2026. 3. [Non-Oncological Progression of an Aneurysmal Bone Cyst (ABC) in a Puppy Following Surgical Treatment](https://pubmed.ncbi.nlm.nih.gov/42791713/). Animals : an open access journal from MDPI, 2026. 4. [Sclerotherapy for Aneurysmal Bone Cyst in Canine](https://pubmed.ncbi.nlm.nih.gov/42237883/). Veterinary medicine and science, 2026. 5. [Osteolytic metastases from a pheochromocytoma presenting as multiple limb lameness and joint swelling in a dog: a case report](https://pubmed.ncbi.nlm.nih.gov/41321567/). Frontiers in veterinary science, 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)