The Kurilian Bobtail is a natural breed, meaning it developed through natural selection rather than deliberate human design. Its homeland is the Kuril Islands, a volcanic archipelago stretching between the Russian Kamchatka Peninsula and the Japanese island of Hokkaido, along with neighboring Sakhalin Island. Short-tailed cats have been documented in this region for more than two centuries, shaped by an unforgiving climate of cold winds, heavy precipitation, and rugged terrain.
The breed's signature pom-pom tail is the result of a spontaneous genetic mutation that arose and then persisted in the island population. Because the cats lived largely isolated from the mainland, the trait concentrated over generations until a short, kinked tail became characteristic of the local cats. Researchers continue to debate exactly why the trait took hold, though it appears to have posed no disadvantage to the islands' agile hunters.
Kurilian Bobtails reached the Russian mainland around the middle of the twentieth century, most often carried back by military personnel and scientists stationed in the Far East. From there, fanciers began documenting and preserving the cats as a distinct type. The breed shares an obvious resemblance to the Japanese Bobtail, and the two are widely believed to be related, though the Kurilian is promoted as a separate Russian aboriginal breed with its own developmental history.
One genetic distinction sets the Kurilian apart from some of its bobtailed relatives: its short-tail trait is inherited as a dominant gene. A single copy from one parent is enough to pass the characteristic to kittens, which helped the trait remain stable as organized breeding began.