Polydactyl Cats: Fascinating Facts About Cats With Extra Toes

So, what does it mean to be polydactyl anyway? Well, the word literally means “many digits,” and it’s a condition in which cats are born with more than the normal number of toes. In case you’re wondering, the standard number of kitty toes is 18—five for each front paw and four for each back paw.

Specifically, polydactylism—also called polydactyly—is a genetic mutation. The mutation is referred to as “autosomal dominant,” which means that it’s a trait passed down through families of cats. When a cat is polydactyl, it usually means that they have one extra toe on each front foot, but occasionally, there can be more. While it’s more common to have additional toes on the front paws, every now and then, it can also affect the hind paws. In some cases, it can impact all four feet.

In general, polydactyl cats can have six to eight toes on each foot, making for an appearance that resembles a mitten. Due to this characteristic, polydactyl cats are sometimes nicknamed “mitten cats”!

Overall, there are three different types of polydactylism, and each one is distinct from the other. They are:

• Preaxial: This involves extra toes on the inside edge of the foot, resulting in an extra dewclaw that’s well-developed and resembles a thumb. Additionally, these cats are known to have very wide paws.
• Mesoaxial: These cats have an extra toe in the middle of the foot that can look like a regular toe or can be a shorter toe that keeps the nail from extending to the outer edge of the foot with the others.
• Postaxial: Here the expression of extra toes is on the outside edge of the foot—if cats had a “pinky finger,” these cats would have an extra pinky.

Are polydactyl cats pretty rare? Or are they more common than we think?

Even though polydactylism is inherited as a dominant gene, it’s still quite rare. If one of the parents is polydactyl, the kittens have a 40-50 percent chance of having the condition.

And the scarcity can be broken down by the types of polydactylism as well. Preaxial cats are more common, postaxial cats are quite rare, and mesoaxial cats are in the middle when it comes to rarity.

There are some factors that can increase a cat’s likelihood of having extra toes, often coming down to their breed, where they live in the world, and some additional factors.

The top two cat breeds that are polydactyl? Maine Coons, those extra-large and extra-fluffy cats that are one of the oldest natural breeds in North America, and Pixie Bobs, which, as legend says, descended partly from bobcats and tend to have an exotic look. Maine Coon cats have a relatively high rate of polydactylism compared to the cat population as a whole.

Although polydactyly comes up more often for these breeds, veterinarians say that they see it in every breed, including the typical “domestic shorthair” cat. In fact, any mixed-breed cat can acquire polydactylism, as it is a dominant trait.

You might be wondering: What health issues typically come with polydactyl cats, if any?

Depending on the location of the extra toe(s), some toes can be hard to reach for keeping them trimmed and may even grow in abnormal ways. This can result in ingrown nails, which can be a very painful condition. Or the toenails can continue to grow into the paw pad, causing trauma and infection. Generally, a scratching post won’t help file down these extra hidden claws.

At times, some of the toes can be just soft tissue, and they don’t contain the typical bone structure. Since they’re not fully functioning and they’re essentially pieces of floppy soft tissue that hangs, there is a risk of getting these toes caught on something.

Occasionally, a veterinarian might recommend removal of a specific toe if it tends to be a consistent problem source. If the toes can all be kept up with when it comes to nail trims, it won’t be medically necessary to remove any of the toes. But if your cat does need a toe or two amputated, you should know that it likely won’t affect their gait or balance.

Thankfully, there are no diseases or serious health issues that are inherited alongside the trait of polydactylism. Just plan on some extra care, grooming, and cat nail trims for those extra toes and toenails.

Besides making them look like they’re wearing big mittens or have adorably wide paws, polydactyl cats can enjoy some benefits.

People have witnessed polydactyl cats acting as world-champion hunters. That’s because their extra-large front paws may make it easier for them to catch bugs, lizards or mice. And like those sea captains of yore, others say that these cats tend to have a better sense of balance.

Of course, these “myths and legends” haven’t been scientifically proven. But what is true is that polydactyl cats tend to be thought of as even cuter than cats with the regular number of toes—they may even have a higher rate of adoption from shelters because of it.

There are a few special measures pet parents can take with their polydactyl cats, besides admiring how cute and unique they look!

If you get a polydactyl kitten, it’s important to get them used to nail trimming as soon as you can. Touch their feet and nails daily. You need to be able to touch your cat’s feet to assess their toes and nails regularly. Check for overgrown toenails, as some of the extra toes may not develop the muscles, nerves and tendons to be fully functional. And remember, a scratching post will likely not be enough to maintain all these nails.

If you don’t know how to trim their nails already, this guide can help. You can also ask your veterinarian to teach you. Vets recommend giving your kitty a tasty snack like a Churu stick while trimming their nails for positive reinforcement. It’s a good idea to make it an enjoyable experience, as these cats will need regular nail trims approximately every month for the rest of their lives.