Manx (cat)
From Wikipedia, the free encyclopedia
| Manx | |
|---|---|
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| Country of origin | |
| Isle of Man (Crown dependency) | |
| Breed standard | |
| CFA | : standard |
| TICA | : standard |
| AACE | : standard |
| ACFA | : standard |
| CCA | : standard |
The Manx (kayt Manninagh or stubbin in Manx Gaelic) is a breed of cats with a naturally occurring mutation of the spine. This mutation shortens the tail, resulting in a range of tail lengths from normal to tailless. Many Manx have a small 'stub' of a tail, but Manx cats are best known as being entirely tailless and is the distinguishing characteristic of the breed and a cat body type genetic mutation.
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[edit] Origin
The Manx breed originated on the Isle of Man (hence the name), where they are common. They are called stubbin in the Manx language. They are an old breed, and tail-less cats were common on the island as long as three hundred years ago. The tail-lessness arises from a genetic mutation that became common on the island (an example of the Founder effect). The Manx tail-less gene is dominant and highly penetrant; kittens from Manx parents are generally born without any tail. Having two copies of the gene is lethal and kittens are usually spontaneously aborted before birth.[1][2] This means that tail-less cats can carry only one copy of the gene. Because of the danger of having two copies of the tail-less gene, breeders have to be careful about breeding two tail-less Manxes together.[3] Problems can be avoided by breeding tail-less cats with tailed ones and this breeding practice is responsible for the decreasing occurrence of spinal problems in recent years.
There are various legends that seek to explain why the Manx has no tail. In one of them, Noah closed the door of the ark when it began to rain and accidentally cut off the Manx's tail, who'd been playing and almost got left behind.[4] Another legend claims that the Manx is the offspring of a cat and a rabbit which is why it has no tail and rather long hind legs. In addition, they move with more of a hop than a stride, like a rabbit. This legend was further reinforced by the Cabbit myth. Recent postcards on the Isle of Man depict a cartoon scene of a cat's tail being run over and removed by a motorbike, because motorbike racing is popular on the Island.
[edit] Appearance
The hind legs of a Manx are longer than the front legs, creating a continuous arch from shoulders to rump giving the cat a rounded appearance.
[edit] Tail length
Manx kittens are classified according to tail length:
- Dimple rumpy or rumpy - no tail whatsoever
- Riser or rumpy riser - stub of cartilage or several vertebrae under the fur, most noticeable when kitten is happy and raising its 'tail'
- Stumpy - partial tail, more than a 'riser' but less than 'tailed' (in rare cases kittens are born with kinked tails because of incomplete growth of the tail during development)
- Tailed or longy - complete or near complete tail
-Tail length is random throughout litter.
The ideal show Manx is the rumpy; the stumpy and tailed Manx do not qualify to be shown. In the past, kittens with stumpy or full tails have been docked at birth as a preventative measure due to some partial tails being very prone to a form of arthritis that causes the cat severe pain. [4]
[edit] Coat
Manx cats exhibit two coat lengths. The short-haired Manx has a double coat with a thick, short under-layer and a longer, coarse outer-layer with guard hairs. The long-haired Manx, known to some cat registries as the Cymric, has a silky-textured double coat of medium length, with britches, belly and neck ruff, tufts of fur between the toes and full ear furnishings. The Cat Fanciers' Association (CFA) considers the Cymric to be a variety of Manx and judges it in the short-hair division, while The International Cat Association (TICA) judges it in the long-hair division. Short- or long-haired, all Manx have a thick double-layered coat.
[edit] Health
Pedigreed Manx cats today are much healthier and have fewer health issues related to their genetics than the Manx of years ago.[citation needed] This is due in part to the careful selection of breeding stock, and knowledgeable, dedicated breeders. Manx have been known to live into their mid- to high-teens and are no less healthy than other cat breeds.[citation needed]
[edit] Manx Syndrome
Manx Syndrome is a colloquial name given to the condition which results when the mutant tailless gene shortens the spine too much. It can seriously damage the spinal cord and the nerves causing spina bifida as well as problems with the bowels, bladder, and digestion. Some only live for 3 years; the oldest recorded was 5. In one study it was shown to affect about 20% of Manx cats, but almost all of those cases were rumpies, which exhibit the most extreme phenotype.[2] Actual occurrences of this are rare in modern examples of the breed due to informed breeding practices.[5] Most pedigreed cats are not placed until four months of age (to make sure that they are properly socialised) and this gives adequate time for any health problems to be identified.[citation needed] Renowned feline expert Roger Tabor has stated that "Only the fact that the Manx is a historic breed stops us being as critical of this dangerous gene as of other more recent selected abnormalities.".[6]
[edit] Common unknown facts
- The Manx breed, in spite of the absence of tail, has no problems with balance.
- The Isle of Man has adopted the Manx cat as a symbol of its native origins. On the Isle of Man, Manx cats appear on the 1988 "cat" crown [1] and stamps.
- Even though Manx cats cease to be kittens after one year, it takes up to five years for any Manx cat to be fully grown.[citation needed]
- The Manx was developed before the 1700s.
- The breed is of medium size with an average weight of 5.5 kg (12 lb).
- The Manx are said to be skilled hunters, known to take down larger prey even when they are young—it is not uncommon to find a Manx with a squirrel or opossum much larger than itself. They are often sought by farmers with rodent problems.
- The famous ASL-speaking gorilla, Koko, has chosen three separate Manx (All Ball, Lipstick and Smokey) as pets.
- Some Manx cats resemble rabbits because of their long hind legs. This has resulted in many being called "cabbits", a portmanteau of 'rabbit' and 'cat'.
- The Manx Cats are said to have come from the Spanish Armada. A ship foundered on Spanish Rock on the coast of the Isle of Man. The cats on the ship swam ashore and became an established breed. The cats originally went onboard the Spanish ship in the Far East.
[edit] See also
[edit] References
- ^ Table of various cat genes
- ^ a b Robinson, R (1993). "Expressivity of the Manx gene in cats". Journal of heredity 84 (3): 170-2. PMID 8228170.
- ^ Vella, Carolyn; Lorraine Shelton; John McGonagle; Terry Stanglein (1999). Robinson's Genetics for Cat Breeders and Veterinarians. Butterworth-Heinemann. ISBN 0-7506-4069-3.
- ^ a b Manx FAQ from Cat Fancier's Mailing List
- ^ Manx medical facts
- ^ Twisty Cats And The Ethics Of Breeding For Deformity
[edit] External links
- Manx Syndrome Myth and Truth
- Manx Cats Information
- The Manx Breed Council
- Mann Cat Sanctuary of the Isle of Man
