Manx
Tailless cat breed from the Isle of Man.
The Manx is a breed of domestic cat originating on the Isle of Man, distinguished by a dominant genetic mutation that suppresses tail development. While some individuals possess a small stub, the breed is most famous for being entirely tailless, a trait that, along with elongated hind legs and a rounded head, defines its appearance. Manx cats come in all coat colors and patterns, though all-white specimens are rare, and the original island stock had a more limited range. Long-haired variants are sometimes considered a separate breed, the Cymric. On the Isle of Man, local terms distinguish between the *stubbin* (short-tailed) and *rumpy* (tailless) cats. Valued as skilled hunters, they have long been sought by farmers with rodent problems and were a preferred breed for ship cats. They are described as social, tame, and active.
Tailless cats were known on the Isle of Man by the early 19th century, where they remain a substantial but declining portion of the local feline population. The taillessness arose from a spontaneous mutation that became common due to the island’s limited genetic diversity, an example of the founder effect. Folklore offers various fanciful explanations, such as a cat losing its tail when Noah closed the Ark door, or a tailless cat swimming ashore from a wrecked Spanish Armada ship—though no evidence supports such a shipwreck. Another genetically impossible tale claimed the Manx was a hybrid of a cat and a rabbit, explaining its long hind legs and hopping gait. Manx cats have been exhibited in shows since the 1800s, with the first known breed standard published in 1903. Similar tailless populations exist in Cornwall, the Danish peninsula of Reersø, and Crimea, though whether they share a genetic link with the Manx or arose independently is unknown.
- field
- Domestic cat breed
- nationality
- Isle of Man
- known_for
- Taillessness (rumpy) or short tail (stubbin); skilled hunter; ship's cat
- origin
- Isle of Man
- scientific_name
- Felis catus
Lore & Background
Tailless cats, then called stubbin in colloquial Manx language, were known by the early 19th century as cats from the Isle of Man, where they remain a substantial but declining percentage of the local cat population. Some folklore stories claim that tailless domestic cats were brought there by sea. They are descended from mainland stock of obscure origin. Like all house cats, they are ultimately descended from the African wildcat (Felis lybica) and not from native European wildcats (Felis silvestris), of which the island has long been devoid. The dominant trait of taillessness arises from a spontaneous mutation, the Manx taillessness gene, that eventually became common on the island because of the limited genetic diversity of island biogeography (an example of the founder effect and, at the sub-specific level, of the species-area curve).
Reader's Guide
The Manx cat is significant as a distinct breed with a long history on the Isle of Man, where its taillessness became common due to the founder effect and limited genetic diversity. Manx cats were one of the first breeds recognised by the Cat Fanciers' Association (CFA), which has records on the breed in North America going back to the 1920s. The breed's taillessness does not breed true; tail length is random throughout a litter of kittens, and attempting to force the tailless trait to breed true by continually breeding tailless Manx cats to tailless Manx cats has led to increased negative, even fatal genetic disorders. Manx cats are classified by tail type: rumpy (no tail), riser (cartilage bump), stumpy (partial tail up to 3 cm), stubby (short tail up to half normal), and longy (half to normal length). Show cats have traditionally been rumpy through stumpy specimens. The breed's legacy includes its role as a skilled hunter and ship's cat, and its presence in folklore, including tales of a shipwrecked Spanish Armada cat and the biblical Noah story.
Did You Know?
- Two local terms for Manx cats on the Isle of Man are stubbin (short tail) and rumpy (no tail).
- The Manx cat's taillessness arises from a spontaneous mutation that became common due to the founder effect and limited genetic diversity on the island.
- Populations of tailless cats also exist in Cornwall, on the Danish peninsula of Reersø, and in Crimea, though whether they are genetically related to Manx cats is unknown.
Common Misconceptions (Editorial)
Some people believe that Manx cats descended from native European wildcats (Felis silvestris) or that taillessness developed naturally on the Isle of Man due to isolation alone. In fact, like all domestic cats, they descend from the African wildcat (Felis lybica), and their taillessness arose from a specific spontaneous mutation that became common because of the founder effect and limited genetic diversity on the island.
Why It Matters (Editorial)
The Manx cat endures as a cultural and biological curiosity, a living example of how island isolation can shape a breed through a single spontaneous mutation. Its history as a skilled hunter and favored ship’s cat also reflects a practical bond between humans and animals, reminding us that even a quirky genetic trait can be valued for its utility as well as its novelty.
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