Polydactyl vs Polymelia in Cats. What's the Difference?

Mary Simpson
by Mary Simpson

For this feline, a life-altering condition was remedied with the removal of three extra legs! Giving this now-tripod kitty a new lease on life.

(photo credit: vnlit / shutterstock.com)

A recent article from Edmonton, Canada, caught my eye – probably more because of the shocking visuals that accompanied the story than the heartwarming conclusion. You see, it told the story of Bitsy, a six-legged cat that underwent surgery to remove two extra legs protruding from the side of her abdomen. The one-year-old feline had apparently been abandoned. After being noticed and then watched by concerned neighbours for a couple of days, she was captured and taken to a local cat rescue named the Furget Me Not for assessment.


Named for the Itsy Bitsy Spider (though luckily, this Bitsy had only six legs), it was evident to all that this gentle, highly social tabby would need surgery to improve her comfort and mobility. A GoFundMe was initiated, and before the final goal amount was raised, Windermere Veterinary Hospital had performed the much-needed surgery. Eventually, it was determined that one of her four main legs was not functioning properly and would need to be removed as well. So, Bitsy is now a tripod… with a whole lot of energy and a new lease on life. Per her foster parent, the little trooper was up eating and using the litter box within 24 hours of having her three limbs removed.


The veterinarian involved identified Bitsy’s plight as being something called polymelia. It’s a birth defect that results in animals (or humans) being born with extra limbs. In many instances, it’s caused by an embryo that initially began as conjoined twins but then degenerated to the point that only a limb or limbs from one of the twins is left. With Bitsy, it was not only the legs of her littermate that had remained, but a second pelvis that would need to be removed. Big surgery, big price tag, and luckily, big support from her community.


Now, what exactly causes this type of abnormality can range from genetic mutations to environmental factors that impact normal fetal growth – such as toxins, infections, and even radiation.


And polymelia is not to be confused with a harmless, not uncommon genetic condition called polydactyl, where felines are born with extra toes. Polymelia is life-altering and requires intervention through surgery. With wee Bitsy, it was the only way to ensure a happy, healthy future for the feline.


Which of course is in the cards as one of the devoted staff members at the veterinary clinic who has been fostering the loving little tripod cat, has now applied to adopt her.

Mary Simpson
Mary Simpson

Sharing space with three seriously judgy Schnoodles and 2 felines who prefers to be left alone. #LivingMyBestLife

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