Yes, “thumb cats” are real—people usually mean polydactyl cats, which are cats born with extra toes that make their paws look like they have thumbs or little mittens.

What thumb cats are

Polydactyl cats are simply cats with more than the usual 18 toes, caused by a harmless inherited genetic trait.

The extra toes often sit a bit apart or at an angle on the front paws, so they resemble a thumb or a thumb-in-a-mitten look.

Are thumb cats common?

These cats are not especially rare, and the trait passes on easily in families of cats.

If a polydactyl cat has kittens with a normal cat, each kitten has about a 50% chance of inheriting the extra-toes gene.

Names and nicknames

Thumb cats are often called:

  • Polydactyl cats (the technical term)
  • “Cats with thumbs,” mitten cats, or boxing cats, thanks to their wide, paw-mitten look
  • Hemingway cats, after Ernest Hemingway, whose famous Key West home still has many polydactyl cats.

Do the thumbs do anything?

Most thumb cats live completely normal lives; the extra toes are usually just a quirky physical feature.

Some owners say their polydactyl cats seem extra good at climbing or grasping toys, but this is more fun observation than hard science.

Fun cultural and forum angle

Online forums and memes love to imagine what cats would do if they had fully functional thumbs—like opening doors, raiding fridges, or “taking over the world.”

Actual thumb cats don’t do anything that dramatic, but photos and stories of their unusual paws keep them a recurring, lighthearted trending topic among cat enthusiasts.

Information gathered from public forums or data available on the internet and portrayed here.