Paw Pad Hyperkeratosis and Cracked Paws in Dogs

By Emiel Maddens  ·  Reviewed in consultation with licensed veterinary professionals  ·  Updated April 2026  ·  11 min read

Photo by Tima Miroshnichenko on Pexels

Your dog's paw pads are remarkable structures, tough enough to walk on hot pavement and rough terrain yet sensitive enough to detect subtle changes in surface texture. When those pads become excessively thick, dry, and cracked, your dog may be suffering from paw pad hyperkeratosis. This condition involves an overproduction of keratin, the hard protein that gives paw pads their protective durability. Instead of maintaining a flexible, slightly textured surface, the pads develop a rigid, crusty overgrowth that can crack painfully with every step.

Paw pad hyperkeratosis is more than a cosmetic issue. The deep fissures that develop in severely affected pads can become entry points for bacteria, leading to secondary infections that cause lameness and significant discomfort. Dogs may begin favoring certain feet, licking their paws excessively, or reluctantly walking on hard surfaces. The condition can be an isolated problem in genetically predisposed breeds or a symptom of a larger systemic disease that requires veterinary investigation. This guide provides a thorough look at the causes, diagnosis, and management of paw pad hyperkeratosis so you can help your dog walk comfortably again.

What Is Paw Pad Hyperkeratosis?

Paw pad hyperkeratosis is a condition in which the keratin-producing cells of the footpad epidermis generate excess keratin that accumulates faster than it can be worn away through normal walking and activity. The result is a thickened, often feathered or fringe-like overgrowth along the edges of the pads that can harden, crack, and become painful.

Normal Paw Pad Structure vs. Hyperkeratosis

A healthy paw pad has a thick but flexible epidermis with a balanced rate of keratin production and shedding. The surface is slightly rough to provide traction but smooth enough to remain comfortable. In hyperkeratosis, this balance is disrupted, and keratin accumulates into visible projections, sometimes described as looking like feathers, horns, or hair growing from the pad surface. These projections are actually compressed columns of keratin, not true hair, and they can catch on surfaces and tear painfully.

Hereditary Footpad Hyperkeratosis

Some breeds carry genetic mutations that cause abnormal keratinization specifically in the footpads. The best characterized of these is familial footpad hyperkeratosis in Irish Terriers and Dogue de Bordeaux, caused by mutations in the FAM83G gene. In these dogs, symptoms typically appear in the first year of life and are progressive, eventually requiring lifelong management. Other breeds develop similar but less well-characterized hereditary forms that follow the same general pattern of early onset and gradual worsening.

Secondary Paw Pad Hyperkeratosis

When footpad hyperkeratosis develops as a consequence of another disease, the underlying condition must be identified and treated alongside the paw pad symptoms. Canine distemper virus is a classic cause, producing permanent 'hard pad' disease. Autoimmune conditions like pemphigus and lupus can target the footpads. Zinc deficiency, hepatocutaneous syndrome (superficial necrolytic dermatitis), and leishmaniasis are other systemic causes that produce footpad hyperkeratosis as a presenting sign.

Regular paw balm application helps soften the excess keratin buildup that causes cracking and discomfort in dogs with paw pad hyperkeratosis.

Photo by Anya Prygunova on Unsplash

What Causes Cracked, Rough Paw Pads in Dogs?

The causes of paw pad hyperkeratosis range from inherited defects in keratin regulation to infectious, autoimmune, nutritional, and environmental factors. Identifying the specific cause in your dog is important because treatment strategies differ significantly depending on the underlying trigger.

1. Genetic and Breed-Related Factors

Hereditary footpad hyperkeratosis is well documented in several breeds and involves mutations that affect the normal regulation of keratinocyte proliferation in the paw pads. The condition typically appears in puppyhood or young adulthood and worsens progressively without treatment. Breeds with known genetic predisposition include Labrador Retrievers, Golden Retrievers, English Bulldogs, and Cocker Spaniels. In these dogs, both the nose and paw pads are often affected simultaneously.

2. Canine Distemper Virus (Hard Pad Disease)

Canine distemper virus damages the stem cells in the footpad epidermis, leading to lifelong keratin overproduction even after the dog recovers from the acute viral infection. The resulting 'hard pad' is one of the classic hallmarks of prior distemper infection. These dogs develop extremely thick, rigid paw pads that crack readily and require intensive ongoing management. Proper vaccination prevents this devastating and irreversible complication.

3. Autoimmune Skin Disease

Pemphigus foliaceus and discoid lupus erythematosus can target the footpads, causing inflammation, crusting, ulceration, and secondary hyperkeratosis. The immune-mediated inflammation disrupts normal keratinocyte function and accelerates keratin production. Autoimmune footpad disease is often bilateral and symmetric, affecting all four feet, and is typically accompanied by lesions on the nose, ears, or other areas of the body.

4. Environmental Damage

Hot pavement, road salt, ice-melting chemicals, rough terrain, and prolonged exposure to wet conditions can all damage paw pad tissue and trigger reactive hyperkeratosis. The pads respond to chronic injury by producing more keratin as a protective mechanism, similar to callus formation in humans. While this response is initially adaptive, it can become excessive and lead to the same cracking and discomfort seen in genetic or disease-related hyperkeratosis.

5. Nutritional Deficiencies

Zinc deficiency is the most common nutritional cause of paw pad hyperkeratosis. Zinc is essential for normal keratinocyte differentiation, and its absence leads to parakeratosis (retention of nuclei in the keratin layer) and subsequent hyperkeratosis. Additionally, hepatocutaneous syndrome, a devastating condition associated with liver disease, causes severe footpad hyperkeratosis, crusting, and ulceration due to amino acid depletion and metabolic derangement.

Which Breeds Are Most Affected?

While any dog can develop paw pad hyperkeratosis, certain breeds carry genetic predispositions that make the condition far more likely. Breeds with known hereditary footpad keratinization defects, as well as those prone to concurrent skin conditions, are most frequently diagnosed.

• Labrador Retriever: Labrador Retrievers are one of the breeds most commonly seen in veterinary dermatology clinics for paw pad hyperkeratosis. The condition often affects both the nasal planum and the footpads, a pattern known as nasodigital hyperkeratosis. Labs tend to develop the condition in middle age, and their active lifestyle means cracked pads can quickly become a functional problem that limits exercise and outdoor time.
• Golden Retriever: Golden Retrievers share many of the same dermatological predispositions as Labrador Retrievers, including a tendency toward idiopathic paw pad hyperkeratosis. Their thick, feathered coat between the toes can trap moisture and debris against already compromised pads, increasing the risk of secondary infection in cracked tissue. Regular grooming of the interdigital hair and daily paw checks are recommended.
• English Bulldog: English Bulldogs are predisposed to hyperkeratosis of both the nose and paw pads as part of their broader spectrum of skin conditions. Their relatively sedentary lifestyle means the paw pads do not get the natural wear that helps keep keratin buildup in check in more active breeds. Bulldogs with concurrent skin fold infections between the toes face a double challenge of managing both the hyperkeratosis and interdigital dermatitis.
• Cocker Spaniel: Cocker Spaniels are well known in veterinary dermatology for their susceptibility to keratinization disorders affecting multiple body regions. Idiopathic nasodigital hyperkeratosis in Cockers tends to be progressive and can become quite severe if not managed consistently. Their pendulous ears and oily coat reflect a broader sebaceous gland dysfunction that may contribute to abnormal keratin production on the footpads.
• Boxer: Boxers are an active, short-coated breed that can develop paw pad hyperkeratosis both as an idiopathic condition and secondary to their predisposition to various skin disorders. Their high energy level means cracked pads are quickly exposed to dirt, bacteria, and mechanical stress during exercise. Boxers with paw pad issues may benefit from protective booties during walks on rough or treated surfaces.

Signs and Symptoms

Paw pad hyperkeratosis develops gradually, and owners often do not notice it until the condition has progressed to the point of causing visible discomfort. Regularly inspecting your dog's paw pads during grooming helps catch the condition early, when management is simplest.

Rough, Thickened Paw Pads

The earliest sign is a change in pad texture from slightly rough and flexible to noticeably hard and thickened. The pads may feel like sandpaper or coarse stone rather than the normal leathery texture. This stage is often asymptomatic, but the increased rigidity reduces the pad's natural shock-absorbing ability, which can affect the dog's gait over time.

Feathered or Horn-Like Growths

As keratin accumulates, it may form projections along the edges of the pads that resemble feathers, small horns, or hair-like growths. These are composed of compressed keratin columns and can be several millimeters long. They catch on carpets, blankets, and rough surfaces, causing discomfort and sometimes tearing at the base. This distinctive appearance is often what first prompts owners to seek veterinary advice.

Cracking and Fissuring of the Pads

Thick, inflexible keratin cannot bend with the normal motion of the paw, and deep cracks develop along natural flex points. These fissures can extend into the dermis, causing pain and bleeding. Every step re-opens the cracks, creating a cycle of damage and incomplete healing. Dogs with fissured pads may begin limping, walking gingerly, or refusing to walk on hard surfaces.

Excessive Paw Licking and Chewing

Dogs experiencing paw pad discomfort often lick or chew at their feet excessively. While paw licking has many causes, in the context of visibly thickened or cracked pads, it strongly suggests that the hyperkeratosis is causing pain or irritation. The constant moisture from licking can further macerate the already compromised tissue and increase the risk of secondary yeast or bacterial infection.

Lameness or Reluctance to Walk

In advanced cases, the pain from deep pad fissures, secondary infection, or foreign material embedded in cracks can cause noticeable lameness. Dogs may shift weight off the most severely affected feet, walk on grass rather than pavement to reduce pressure, or simply refuse to go on walks. Any sudden lameness accompanied by visibly abnormal paw pads warrants prompt veterinary evaluation.

Secondary Infection Signs

Cracked paw pads provide an entry point for bacteria and fungi. Signs of secondary infection include swelling, redness, warmth, purulent discharge, and a foul odor emanating from the feet. The interdigital spaces may also become inflamed and swollen. Secondary infections require treatment with appropriate antimicrobial therapy in addition to managing the underlying hyperkeratosis.

Diagnosis

Diagnosing paw pad hyperkeratosis is usually straightforward based on the visual appearance of the pads, but a thorough workup is needed to identify or rule out underlying systemic causes. Your veterinarian will assess whether the condition is isolated to the paws or part of a larger disease process.

Physical Examination

The veterinarian will carefully examine all four paw pads, noting the degree of keratin buildup, the presence of cracks or fissures, signs of infection, and whether the condition is symmetric. They will also examine the nose (concurrent nasal hyperkeratosis suggests a systemic process), ears, and general skin condition. The dog's age, breed, vaccination history, and diet are all relevant to narrowing the differential diagnosis.

Skin Biopsy of the Paw Pad

Biopsy is the gold standard for differentiating the various causes of footpad hyperkeratosis. A small punch or wedge biopsy is taken from the margin of an affected pad under sedation or general anesthesia. The pathologist evaluates the pattern of keratinization (orthokeratotic vs. parakeratotic), the presence and type of inflammation, and any specific histological features that point to autoimmune disease, infectious agents, or inherited keratinization defects.

Blood Work and Metabolic Screening

A complete blood count, serum chemistry panel, and liver function tests help screen for systemic diseases that can cause paw pad hyperkeratosis. Hepatocutaneous syndrome, for example, is associated with characteristic liver changes and amino acid depletion detectable on blood work and ultrasound. Serum zinc levels may be measured if zinc-responsive dermatosis is suspected, particularly in northern breeds.

Imaging Studies

Abdominal ultrasound may be recommended if hepatocutaneous syndrome is a differential diagnosis. This condition produces a characteristic 'honeycomb' pattern in the liver on ultrasound that is virtually diagnostic. Radiographs of the feet may be taken if there is concern about osteomyelitis (bone infection) secondary to deep pad infections that have penetrated through the full thickness of the pad tissue.

Treatment

Managing paw pad hyperkeratosis requires a combination of regular mechanical debridement, topical moisturizing, environmental protection, and treatment of any identified underlying cause. The condition is rarely curable but can be kept comfortable with consistent care.

Soaking and Gentle Debridement

The foundation of paw pad management is regular soaking in warm water for 10 to 15 minutes to soften the excess keratin, followed by gentle removal of the loosened material with a soft cloth, fine pumice stone, or blunt scissors for feathered projections. Never cut into living tissue, only trim what is clearly dead, hardened keratin. This process should be done every one to two weeks depending on the rate of keratin regrowth. Follow immediately with a paw balm to protect the freshly exposed pad surface.

Paw Balms and Moisturizers

Purpose-made paw balms containing ingredients like shea butter, beeswax, coconut oil, or vitamin E provide moisture and create a protective barrier over the pad surface. Apply daily, ideally before bedtime so the product has time to absorb without being immediately walked off. Some owners use thin cotton socks or booties over the balm to maximize absorption and prevent the dog from licking it off. Consistent daily application prevents the keratin from drying and cracking between debridement sessions.

Prescription Keratolytic Products

For severe cases, veterinarians may prescribe topical products containing salicylic acid, urea, or propylene glycol that actively dissolve excess keratin. These are more potent than over-the-counter balms and should be used under veterinary supervision to prevent removing too much tissue. Keratolytics are typically used for an initial intensive treatment phase and then tapered to a maintenance schedule once the pad thickness is brought under control.

Protective Booties

Dog booties serve a dual purpose in paw pad hyperkeratosis management: they protect compromised pads from rough surfaces, hot pavement, road salt, and chemical irritants, and they keep topical treatments in contact with the pad surface for longer. Booties are especially valuable during walks on treated sidewalks in winter or on hot asphalt in summer, both of which can severely aggravate cracked pads.

Treatment of Underlying Conditions

When hyperkeratosis is secondary to a systemic disease, treating the root cause is essential. Autoimmune conditions require immunosuppressive therapy. Zinc deficiency is addressed with oral zinc supplementation. Hepatocutaneous syndrome requires intensive nutritional support with amino acid infusions and management of the underlying liver disease. Addressing the systemic cause often significantly improves the paw pad hyperkeratosis, though some degree of topical management is usually still necessary.

Prevention

While hereditary paw pad hyperkeratosis cannot be fully prevented, proactive paw care and environmental management significantly reduce the severity of symptoms and the risk of painful complications.

Daily Paw Pad Inspection and Moisturizing

Make a habit of checking your dog's paw pads every day, especially after walks. Look for early signs of thickening, dryness, or cracking, and apply a paw balm at the first sign of changes. Catching hyperkeratosis early, before deep fissures develop, makes management far easier and prevents the pain and secondary infections that come with advanced disease.

Avoid Hot Pavement and Harsh Chemicals

Hot asphalt can burn and damage paw pad tissue, triggering reactive hyperkeratosis. Apply the 'back of the hand' test: if the pavement is too hot for your hand after five seconds, it is too hot for your dog's paws. Similarly, road salt and ice-melting chemicals are caustic to paw pads. Rinse your dog's feet after winter walks and consider booties in areas where chemical deicers are heavily used.

Balanced Diet with Adequate Zinc and Fatty Acids

Proper nutrition supports healthy keratinization throughout the body, including the paw pads. Feed a complete and balanced diet that meets AAFCO standards, and discuss zinc supplementation with your veterinarian if your dog is a breed predisposed to zinc-responsive dermatosis. Omega-3 fatty acid supplementation from fish oil can improve overall skin health and help maintain pad flexibility.

Keep Paws Clean and Dry

Moisture trapped between the toes and against the paw pads promotes maceration and secondary infection, both of which worsen hyperkeratosis. After walks in wet conditions, dry your dog's paws thoroughly, paying attention to the interdigital spaces. For dogs with heavy interdigital hair, regular trimming reduces moisture retention and makes drying easier.

Maintain Vaccination and Veterinary Checkups

Keeping your dog current on core vaccinations, including canine distemper, prevents one of the most severe and irreversible causes of paw pad hyperkeratosis. Regular veterinary checkups allow your vet to monitor paw pad health and catch early changes before they become problematic. For predisposed breeds, mention paw pad care at every wellness visit.

Related Symptoms

Dogs with this condition often show these symptoms. Our guides explain each one:

• Dog Paw Licking, Excessive paw licking is one of the most common signs that your dog's paw pads are uncomfortable. Learn about all the causes of this behavior.
• Dog Dandruff and Flaking, Dogs with keratinization disorders affecting the paw pads often have concurrent dandruff and flaky skin on the body.
• Dog Yeasty Smell, A yeasty odor from the paws can indicate secondary Malassezia infection in the cracks and fissures of hyperkeratotic paw pads.
• Dog Hair Loss (Alopecia), Autoimmune conditions that cause paw pad hyperkeratosis can also produce hair loss in other body regions.
• Dog Skin Bumps and Lumps, Bumps between the toes or on the pad margins may develop alongside hyperkeratosis in dogs with interdigital disease.
• Dog Scooting, Scooting and paw licking can both be signs of systemic allergic disease that may also affect the paw pads.

Frequently Asked Questions About Paw Pad Hyperkeratosis in Dogs

Q: Is paw pad hyperkeratosis painful for dogs?

Mild hyperkeratosis with smooth thickening may not be painful, but once the rigid keratin cracks and fissures develop, the condition becomes uncomfortable or outright painful. Deep fissures can extend into living tissue, causing bleeding and providing entry points for infection. Even without visible cracks, the reduced flexibility of hyperkeratotic pads can alter gait and cause joint strain over time.

Q: Can I use a pumice stone on my dog's paw pads?

A fine-grit pumice stone can be used gently on softened (post-soak) paw pads to help remove excess keratin buildup. Work in light, even strokes and stop if you see any pinkness or if the dog shows signs of discomfort. The goal is to reduce thickness gradually over multiple sessions, not to remove all excess keratin in one sitting. Always apply a paw balm immediately after to protect the freshly exposed surface.

Q: Will dog booties help with hyperkeratosis?

Yes, booties serve multiple purposes for dogs with paw pad hyperkeratosis. They protect already compromised pads from rough surfaces, extreme temperatures, and chemical irritants. They also help keep topical treatments in contact with the pads for longer. However, booties should be removed after walks to allow the paws to air out, as prolonged wear can trap moisture and contribute to maceration.

Q: Is paw pad hyperkeratosis the same as calluses?

No, although they can look similar. Calluses are localized areas of thickened skin that develop at pressure points, typically over bony prominences like the elbows or hocks, as a normal protective response. Paw pad hyperkeratosis is a generalized overproduction of keratin across the entire pad surface that is not related to pressure and often has a genetic or systemic cause.

Q: Can paw pad hyperkeratosis be cured?

Idiopathic (hereditary) paw pad hyperkeratosis cannot be cured, but it can be managed very effectively with consistent care. Regular soaking, gentle debridement, and daily moisturizing keep the condition comfortable and prevent painful cracking. When hyperkeratosis is secondary to a treatable condition like zinc deficiency, addressing the underlying cause can lead to significant or even complete resolution.

Q: Should I trim the keratin growths off my dog's paw pads?

Loose, feathered, or horn-like keratin projections can be carefully trimmed with blunt scissors or nail clippers after soaking the paws to soften the tissue. Only trim material that is clearly dead, hardened keratin and never cut into tissue that appears pink, moist, or alive. If you are unsure about what is safe to remove, have your veterinarian or a veterinary technician demonstrate the technique first.

Q: Can I use coconut oil on my dog's cracked paw pads?

Coconut oil is a safe, natural moisturizer that many owners use on mildly hyperkeratotic paw pads. It provides a protective barrier and has mild antimicrobial properties. However, for moderate to severe hyperkeratosis, purpose-made paw balms with additional ingredients like shea butter, beeswax, and vitamin E tend to be more effective. Coconut oil is also readily licked off, so apply it before bedtime or use socks to help it absorb.

Sources

Scott, D.W., Miller, W.H., & Griffin, C.E. (2001). Muller and Kirk's Small Animal Dermatology, 6th Edition. W.B. Saunders Company.

Berk, B.A., Rosenblatt, A., Haase, B., et al. (2020). Familial Footpad Hyperkeratosis in Dogs: Clinical, Histopathological and Genetic Characterisation. Veterinary Dermatology, 31(5), 378-e101.

Hnilica, K.A. & Patterson, A.P. (2016). Small Animal Dermatology: A Color Atlas and Therapeutic Guide, 4th Edition. Elsevier.

Gross, T.L., Ihrke, P.J., Walder, E.J., & Affolter, V.K. (2005). Skin Diseases of the Dog and Cat: Clinical and Histopathologic Diagnosis, 2nd Edition. Blackwell Science.

Outerbridge, C.A. (2006). Nutritional Dermatoses in Dogs and Cats. Veterinary Clinics of North America: Small Animal Practice, 36(6), 1243-1263.

Miller, W.H., Griffin, C.E., & Campbell, K.L. (2013). Muller and Kirk's Small Animal Dermatology, 7th Edition. Elsevier.

Related Reading

• Nasal Hyperkeratosis in Dogs, Many dogs with paw pad hyperkeratosis also develop excess keratin on their nose. Learn about nasal hyperkeratosis diagnosis and treatment.
• Interdigital Cysts in Dogs, Interdigital cysts and furuncles commonly develop alongside paw pad problems, especially in breeds with tight interdigital spaces.
• Yeast Dermatitis in Dogs, Yeast overgrowth between the toes is a common secondary complication in dogs with cracked, compromised paw pads.
• Atopic Dermatitis in Dogs, Allergic skin disease frequently involves the paws and can worsen paw pad hyperkeratosis through chronic inflammation.
• Omega-3 for Dogs: Skin Health Benefits, Omega-3 fatty acids support skin barrier integrity and may help maintain paw pad flexibility in dogs with keratinization disorders.
• Seborrhea in Dogs, Seborrhea is another keratinization disorder that can co-occur with paw pad hyperkeratosis in predisposed breeds.

Emiel Maddens

Founder of Vetified. Develops topical antifungal and antimicrobial formulations for companion animals. Vetified products are listed on DailyMed and manufactured through FDA-registered facilities in the United States.