Why do some cats have extra toes?
Polydactyl cats are born with more than the usual number of toes because of an inherited developmental variation.
Topic illustration selected for this guide. Some learning images may be AI-assisted.Why do some cats have extra toes — the quick answer
✓ Polydactyl cats are born with more than the usual number of toes because of an inherited developmental variation.
✓ Count and inspect every claw regularly because hidden claws can overgrow into pads.
✓ Limping, swelling or an embedded claw requires veterinary treatment.
Polydactyl cats are born with more than the usual number of toes because of an inherited developmental variation. Extra toes can be harmless, but unusual claw positions may need extra monitoring. Here is the useful version of the answer: how it works, what to monitor and when a physical change deserves veterinary attention.
The short answer
Polydactyl cats are born with more than the usual number of toes because of an inherited developmental variation. Normal appearance varies between cats, so compare with your cat's own baseline and pay attention to changes that persist.
How it works
Extra toes can be harmless, but unusual claw positions may need extra monitoring. Age, genetics, pigmentation, anatomy, health and environment can all affect what you see, which is why context matters.
What to check
Compare both sides where relevant and look for pain, swelling, discharge, bleeding, cloudiness, altered movement, appetite change or a difference from clear earlier photographs. One feature is more useful when considered with the cat's overall comfort and routine.
What to do at home
Count and inspect every claw regularly because hidden claws can overgrow into pads. Avoid forcing a repeat for a photo or testing a viral claim. The most cat-friendly response gives choice, protects safety and rewards calm alternatives.
What this does not tell you
Appearance alone cannot diagnose a medical condition or prove that a cat is healthy. Online photographs and general rules cannot replace an examination when a physical change is new, painful or persistent.
When to contact a veterinarian
Limping, swelling or an embedded claw requires veterinary treatment. Seek faster help for breathing difficulty, collapse, seizures, major trauma, suspected poisoning, severe pain or repeated unsuccessful attempts to urinate.
Your quick checklist
Your progress is saved on this device.
Three simple things you can do
You do not have to change everything today. Pick one step that feels realistic, try it and see how your cat responds.
- 1Count every toe and claw while the cat is relaxed, including small or unusually positioned claws.
- 2Inspect and trim each claw on an individual schedule because some extras do not wear normally.
- 3Ask a veterinarian to check twisting, pad contact, recurrent snagging, swelling or altered walking.
Common mistakes
×Assuming every extra claw wears down on a scratcher.
×Missing a hidden claw until it curls into the pad.
×Breeding solely for more extreme toe numbers without prioritising structure and welfare.
Questions cat people ask
What is a polydactyl cat?+
A polydactyl cat is born with more than the usual number of toes because of an inherited developmental variation. Many live comfortably with routine claw monitoring.
Do extra toes cause health problems?+
Not automatically. Risk depends on their structure and claw position; embedded claws, repeated snagging, pain, swelling or limping require veterinary care.
Still looking for the right answer?
Search the full EverYes Cats encyclopedia with your own words — a symptom, food, behaviour, breed or everyday question.
Checked, dated and transparent
- Prepared by
- EverYes Cats editorial team
- Last updated
- 8 August 2026
- Source checked
- 8 August 2026
- Primary reference
- Merck Veterinary Manual ↗
We begin with the named reference, rewrite the information in plain language and add practical cat-parent steps. Urgent health statements are checked against veterinary sources. This guide has not been individually reviewed by a veterinarian unless explicitly stated. It provides education, not diagnosis or treatment.
Spotted something unclear or outdated? Tell us so we can review it.
Your answer helps us improve the cat encyclopedia.
Complete heterochromia means the two irises contain different amounts of pigment.