Sphynx cats originated in Toronto, Canada, where a hairless kitten named Prune was born in the 1960s among an otherwise normal, furry litter. That single genetic accident launched decades of selective breeding that eventually produced the wrinkly, nearly naked cats now ranked as the 9th most popular breed by the Cat Fanciers’ Association.
Prune: The First Hairless Kitten
The story starts with a domestic shorthair in Toronto who gave birth to a litter that included one completely hairless kitten. Breeders named him Prune and recognized that his lack of fur wasn’t a disease or deficiency but a natural genetic mutation. Hairless cats had appeared sporadically throughout history in different parts of the world, but Prune’s birth in Toronto is credited as the starting point of the modern show breed.
Early attempts to breed Prune and establish a hairless line ran into problems. The gene pool was tiny, and the resulting kittens often had health issues tied to inbreeding. That first Toronto lineage eventually fizzled out without producing a sustainable breeding population.
The Cats That Actually Built the Breed
The Sphynx breed as it exists today doesn’t descend from Prune. It traces back to two later, independent occurrences of the same mutation. In 1975, a stray cat named Jezabelle gave birth to two hairless kittens in Minnesota. They were given the names Epidermis and Dermis. Three years later, in 1978, three more hairless kittens (one male and two females) turned up in Toronto.
These five cats, from two separate litters on opposite sides of the border, became the true foundation of the modern Sphynx. Breeders crossed them with domestic shorthairs, then bred those offspring back to hairless cats to reinforce the trait. This backcrossing strategy widened the gene pool enough to keep the cats healthy while locking in the hairless look. Devon Rex cats were also used as outcross partners, partly because they carry a related mutation in the same gene, which made them useful for maintaining the coat trait without introducing completely unrelated genetics.
Why These Cats Are Hairless
Sphynx hairlessness comes from a mutation in a gene called KRT71, which provides instructions for building a protein involved in hair structure. A change in this gene disrupts normal hair growth, leaving the cats with at most a fine peach-fuzz covering rather than a full coat.
The trait is recessive, meaning a kitten needs to inherit the mutated version from both parents to be hairless. A cat carrying just one copy will have normal fur but can pass the mutation to its offspring. Interestingly, the Devon Rex breed carries a different mutation in the same gene, and the Sphynx version is dominant over the Devon Rex version. Both are recessive to normal fur. This genetic relationship explains why crossing Sphynx and Devon Rex cats sometimes produced kittens with varying degrees of hair loss, and it helped breeders understand exactly how the trait was being inherited.
From Curiosity to Championship
For decades, major cat registries were reluctant to recognize the Sphynx. Concerns about the breed’s health, the small gene pool, and general skepticism about breeding for a trait that looked like a defect kept the cats on the sidelines. The Cat Fanciers’ Association accepted Sphynx for registration in 1998, then granted them full championship status in 2002. The International Cat Association had recognized them earlier, giving breeders a venue to show their cats while CFA was still deliberating.
That official recognition transformed the breed’s trajectory. Demand grew steadily, and today the Sphynx sits at number 9 on CFA’s most popular breeds list. Their distinctive appearance, combined with a reputation for being unusually social and affectionate, has made them one of the most recognizable cat breeds in the world.
A Heart Condition Worth Knowing About
The breed’s relatively small genetic foundation has left it vulnerable to certain inherited health problems. The most significant is hypertrophic cardiomyopathy, a condition where the walls of the heart thicken and the heart becomes less efficient at pumping blood. This condition also appears in Maine Coons and Ragdolls, but Sphynx cats have a notable predisposition for it.
Research at Washington State University evaluated Sphynx cats with heart ultrasounds and found evidence suggesting the condition runs in family lines, pointing to a heritable cause. Cats in that study weren’t classified as unaffected until they were at least 9 years old, because the disease can develop later in life. Responsible breeders typically screen their cats with regular heart ultrasounds performed by a board-certified veterinary cardiologist before using them in breeding programs. If you’re considering getting a Sphynx, asking the breeder about cardiac screening history for both parents is one of the most useful questions you can ask.
Why the Name “Sphynx”
The breed’s name references the Great Sphinx of Giza, chosen purely for the visual resemblance. The angular face, large ears, and exposed skin give these cats a look that early breeders thought echoed the famous Egyptian limestone statue. The cats have no actual connection to Egypt or to ancient cat breeds. They’re a thoroughly North American creation, born from random mutations in Canadian and American house cats, then shaped by several decades of careful selective breeding into the wrinkly, warm-skinned companions people line up to adopt today.