Dog Has Thick, Cracked Paw Pads: Hyperkeratosis or Something Else?
General guidance — not a diagnosis. When in doubt, call your vet.
Thick pads are a finding, not a diagnosis
Thick, hard, spiky material on a dog's paw pads can be hyperkeratosis: abnormal buildup of the outer skin layer. In hereditary footpad hyperkeratosis, that thickened layer can become inelastic, split, and leave painful cracks vulnerable to infection.[1] A photograph cannot tell you why the buildup developed. Arrange a veterinary examination for new or worsening changes; move faster if your dog is sore, bleeding, or unwell.
Do not treat a cracked pad as a cosmetic problem just because the rough material looks dry. The useful distinction is whether this is gradual excess growth on the pad or a new injury, inflamed skin, or a wider illness.
What the pattern can tell you
Compare every paw without forcing a painful examination. Note whether the rough growth is on the pad itself, around its edges, or on the skin between the toes. Photograph the same area in consistent light, and record when you first noticed it.
Gradual thickening across several pads: inherited disorders are one possibility. Researchers identified a FAM83G variant associated with hereditary footpad hyperkeratosis in Irish Terriers and Kromfohrländers.[1] Breed is a clue to discuss, not a diagnosis to make at home.
Sudden soreness after a walk: describe the surface, heat, and possible chemical exposure to your vet. If the change followed hot pavement, our dog paw-burn guide covers that separate injury pattern.
Pad changes plus crusts elsewhere: look at the face and body as well as the feet. Superficial necrolytic dermatitis, a condition associated with metabolic disease, can produce pad hyperkeratosis, cracking, and ulceration together with lesions elsewhere.[3] Do not assume that balm addresses the cause.
Facial scales or crusts in a northern-breed dog: zinc-responsive dermatosis is another consideration; diagnosis uses the history, skin findings, and biopsy rather than appearance alone.[4] See the zinc-responsive dermatosis guide for that distinct pattern.
Safe care while arranging an examination
Choose short, comfortable outings on smooth, cool ground. Keep your dog away from hot, sharp, or chemically treated surfaces. If handling hurts, stop and let the clinic examine the paw. Record limping, licking, new cracks, discharge, appetite changes, and any previous products applied.
Do not cut, peel, or file the thick growth yourself. Ask your vet whether any removal is appropriate and how to protect the remaining pad. Avoid human corn removers, harsh acids, and improvised tight bandages. Do not start zinc supplements or leftover prescription medicines to test a theory.
Veterinary management of confirmed familial disease is supportive, including softening care and treatment of secondary infection.[2]
Ask the clinic to select a product and explain safe use.
When to See a Vet
- Seek urgent care if your dog cannot put weight on the foot or cries when trying to walk.
- Contact a vet promptly for a split that is bleeding, visibly swollen, or producing discharge; seek urgent care if bleeding does not stop with gentle pressure.
- Arrange prompt assessment if sores or crusts appear on the face or body as well as the pads, especially with reduced eating or marked tiredness.
- Seek emergency care for collapse or difficulty breathing, whether or not the pad changes seem related.
For dog owners
An article can't ask about your dog.
Describe what you're seeing. You'll get a few follow-up questions about your dog, then where it lands — vet today, watch closely, or no visit needed — and what to do at home meanwhile.
Frequently Asked Questions
Is thickened paw-pad skin always hyperkeratosis?
No. Thickening describes what you see; a vet needs to determine whether it reflects abnormal growth, injury, inflammation, or another process. Bring photographs and a timeline.
Why do the pads look hairy or spiky?
Keratin can form horn-like projections.[2] Do not pull them off.
Can I trim the extra skin at home?
Do not trim it without a veterinarian's specific instructions. Ask the clinic to show you what, if anything, can safely be maintained between visits.
Will paw balm cure it?
No. Softening is supportive care, not a cure for every cause.[2]
Is my dog's food missing zinc?
You cannot infer that from thick pads. Zinc-responsive dermatosis can reflect an absolute or relative zinc deficiency, so diet and supplements need assessment rather than guesswork.[4]
Can I wait if my dog is walking normally?
Book a regular veterinary appointment for new, persistent growth even if your dog seems comfortable. New pain, bleeding, swelling, discharge, or illness changes the urgency.
References
- Drögemüller M et al. A Mutation in the FAM83G Gene in Dogs with Hereditary Footpad Hyperkeratosis (HFH). 2014. PLOS Genetics.
- Moriello KA. Hyperplastic and Seborrheic Syndromes in Animals. 2025. Merck Veterinary Manual, professional version.
- Izydorczyk V, Pye C. Superficial necrolytic dermatitis. 2024. Canadian Veterinary Journal.
- Colombini S. Canine zinc-responsive dermatosis. 1999. PubMed.