Cat Paw Pad Has a Horn-Like Growth: Keratin or Another Lesion?

A paw-pad projection is not automatically an extra nail

A hard, horn-like projection directly from your cat's paw pad may be a cutaneous horn: compacted surface keratin. That name describes the shape, not why it formed. The underlying lesion matters, so a photograph cannot establish whether it is harmless. [1]

Start with your cat's comfort and the condition of the surrounding pad. An intact growth on an otherwise comfortable cat is different from a swollen, bleeding paw that the cat will not put down. This guide is general information, not a diagnosis for your cat.

What does a cutaneous horn tell you?

Veterinary pathology references describe cutaneous horns arising from excessive skin growth and from different underlying lesions, including benign and malignant growths. Paw pads are a recognized site in cats. [1] Neither a dark color nor a pointed shape can settle the cause.

A growth extending from the pad also needs to be distinguished from a damaged nail, material stuck to the paw, and an injured area with dried debris. Tell the clinic where it begins rather than trying to peel it away. If the concern is an open wound rather than a projection, see the separate guide to cat paw-pad injuries.

The vet examines the attachment, the surrounding skin and the rest of the paw. If further testing is recommended, ask what question it is intended to answer. Looking at the tissue beneath a projection may be more informative than looking only at its hard tip. Other cat skin lumps and bumps also need assessment based on more than surface appearance.

Does it mean my cat has feline leukemia virus?

No: a paw growth alone does not diagnose FeLV. Horn-like paw-pad changes have been described in some FeLV-infected cats. [1] That observation is not a way to predict the infection status of every cat with a similar-looking growth.

The AAFP retrovirus guidelines recommend testing in relevant situations, including illness and potential exposure, with interpretation appropriate to the individual cat. [2] Tell your vet whether your cat's status is known, whether they have had contact with cats of unknown status, and whether other health changes are present. Do not label or isolate a cat as infected solely because of a paw photograph.

What can you safely record at home?

Take an overview photo of the paw and a closer image of the growth without forcing the toes apart. Note which paw and pad are affected, whether other paws have similar changes, and whether your cat is licking, limping or avoiding a usual activity. Keep the original images so the clinic can compare them with later ones.

Do not clip, twist, burn, file or apply human wart remover to an undiagnosed lesion. Avoid repeated handling if your cat objects. Bring any material that fell off naturally if the clinic requests it, but do not remove a piece for a sample.

If a vet has already diagnosed the lesion, follow that cat's written maintenance plan. A plan demonstrated for one lesion should not be applied to a different growth without checking.

When to See a Vet

• Seek emergency care for bleeding that will not stop, collapse, or severe distress accompanying the paw problem.
• Contact your vet today if your cat will not bear weight, cries when the paw is approached, or has a markedly swollen pad.
• Arrange prompt assessment if the growth breaks with bleeding, the base becomes raw or discharges fluid, or repeated licking damages the skin.
• Book a regular examination for a newly noticed intact growth, even if your cat walks normally; report enlargement or a change at its base while waiting.

Frequently Asked Questions

Is the growth on my cat's paw pad an extra claw?

Not necessarily. Tell the vet whether it comes directly from the pad or from a toe's nail area; do not pull it to find out. A close photograph and an examination are more useful than calling every hard projection a nail.

Does a cutaneous horn mean my cat has cancer?

No. The term describes a keratin projection, not the underlying diagnosis; the tissue beneath can have different causes. A vet may recommend tissue examination when the base or its behavior is concerning. [1]

Can I clip a horn off my cat's paw?

Do not clip a newly discovered, undiagnosed growth. Leave it intact for assessment rather than assuming the entire structure is dead material. If your vet later recommends maintenance, ask them to demonstrate the exact boundary and stopping signs.

Does a paw horn mean my cat has FeLV?

A horn is not a FeLV test. Paw-pad horns have been described in some FeLV-infected cats, but that association does not establish infection in an individual cat. [1] Discuss testing based on the whole history rather than appearance alone.

Can I wait if my cat is walking normally?

A comfortable cat with an intact, unchanged growth can usually have a regular appointment rather than an emergency visit. Contact the clinic to arrange assessment and describe any change. New pain, bleeding, swelling or difficulty walking changes that plan.

What should I bring to the vet appointment?

Bring photographs showing the whole paw and the growth, when you first noticed it, and any change in walking or licking. Include previous skin problems, medications and available FeLV/FIV results. Ask which changes should trigger a call while you await the appointment.

References

1. Hargis AM, Myers S. The Integument. Pathologic Basis of Veterinary Disease, professional textbook chapter (2017).
2. Little S, Levy J, Hartmann K, et al. 2020 AAFP Feline Retrovirus Testing and Management Guidelines (2020).