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LEFT for pictures-of-cats.org

Manx cats

manx cat
Manx cats - photograph ©copyright Helmi Flick




Manx Cats photos - Copyright Helmi Flick. Click on thumbnails for large format pictures
combined with a discussion about the breed standard & interesting things

Note about the photos: The high quality pictures by Helmi Flick are of purebred Manx at cat shows. They are known to be cats of this breed and some will be champions. The other pictures are by amateur photographers of cats described as cats of this breed. They are probably not purebred and may simply be cats with a short tail. They are here nonetheless to help illustrate this article.

Introduction

Manx Cats are a breed that have developed and evolved on a small island off the English Coast - The Isle of Man.

Thumbnail
credit: litlnemo

Although the exact origins of this breed is in fact unclear. I won't go into detail on common issues. I would rather focus on matters that, I think, need to be noted and/or are of interest.

These points of interest are discussed further in short articles linked to this page by thumbnail photographs. Also the excellent large format photographs of Helmi Flick more than substitutes a wordy description so I hope you will find it useful to click on the thumbnails.

Origin

Manx cats are tailless (but see below for details). Although there are myths describing how this came about, this is caused by a dominant genetic mutation (the genetic symbol for the mutated gene is M). The mutated gene has a high degree of penetration. This accounts for the Founder Effect and the establishment of this breed from a small number of original cats. Several breeds have been created through spontaneous genetic mutation (e.g. American Curl, Dwarf cats and Sphynx, for example), so this is not unusual.

What is perhaps unusual is that the genetic mutation happened several centuries ago. Although this may simply be a question of when the cat demonstrating the mutation was discovered and when people became interested in the cat. The other mutations are fairly recent or at least have been noted/discovered fairly recently.

credit: weretable
The history of the cat is bound up with the Isle of Man (see the embedded map below for the location. The blue flag can be clicked for a pic. of the island). The mutation happened on a small island and the breed has developed on that island with limited interaction with other breeds.

It could be argued that this is a natural cat as they have had limited opportunities to intermingle with any other breed. However, the origins are not altogether clear. Although, the Isle of Man is small (33 miles by 13 miles, population 80,000), it was a center for smuggling and in the late 1700s it was described as a place to store contraband from various countries on Continental Europe (as it is now).

Perhaps then Manx cats were brought in on ships from the Continent? Read more on this here. In any event the breed has a long history including recognition by the CFA since the 1920s. They are then a very well established cat breed but I am a little surprised when considering the health implications of this defective gene. Click on the link to see how Manx cats relate to other cat breed in respect of a cat history time line. A point of interest is that the first pedigree cat club for native shorthaired cats, the Short Haired Cat Society and Manx Club was formed in 1901 and represented this breed. The club was in part set up to champion the British Shorthair cat that was at the time becoming less desirable than the Persians and Siamese cats. These were the early days of the cat fancy.



This is not one of the rare cat breeds but is somewhere in the middle in terms of rarity on my estimation. The same applies with respect to weight and size.

History/Myths

There is documentary evidence of the existence of tailless cats in Cornwall and Dorset in 1837. In 1909 the evidence suggests that this cat was called a Manx cat. Much like the Japanese Bobtail, there are numerous legends surrounding the Manx cat.


Date
Event
?
Myths about losing tail in Noah's Ark door! and importation on ships from Japan (Japanese Bobtail - this is wrong as it carries a different gene mutation)
1588
First Rumpy came in off a ship wrecked of Spanish Head at the time of the Spanish Armada
1730
Research on the Manx language indicated the mutation occurred around this time
1750
The tailless cat called "Stubbin", an English word. The Manx language was used until 1750 indicating the cat arrived after 1750
1845
A writer describes the Manx as a cross between a rabbit and a cat having some of the characteristics of a rabbit
late 1800s?
Belief that amputation of a tail either naturally or purposefully (by docking) can result, in the cat who has had her tail docked, having tailless offspring


manx cat siamese cat cross
Manx-Flame point Siamese cat cross. That is what I think
but I'd like the photographer to tell me. Photo © by ex.libris
under a creative commons license.
1

The Mutation

As the taillessness is caused by a dominant gene mutation, if the Manx is out crossed with another breed say a Domestic Shorthair the result will be that at least half the litter carry the tailless gene. However, not all Manx Cats are tailless. There is a range from fully tailed to without a tail (show quality). Indeed the some Manx Cats have an indention where the tail should be. The range then is from a "negative tail" to a full tail. It is thought that the range of tails is due to the presence of modifying "polygenes" (multiple genes):


Tail length
Description
Comment
dimple for tail
dimple rumpy or rumpy
show quality. This is susceptible to pyoderma
no tail
rumpy
show quality
lump of cartilage/vertebrae where tail should be
riser or rumpy riser - can be divided into rumpy high riser and rumpy low riser - you can't feel the cartilage when the cat is relaxed in the low riser.
show quality-can be felt when cat is happy (i.e. "tail" is erect) -the lump musn't stop the hand when stroking cat
short tail
stumpy - tail is movable although sometimes deformed and kinked.
pet quality
normal tail (shorter than average however)
longy or tailed
pet quality³
no tail - docked
docked
cat had a tail and breeder had it docked - see below.





Photograph copyright Helmi Flick

Appearance  -Manx cats

If the cat is born a stumpy or longy the breeder will dock (amputate) the tail. This is ostensibly to prevent the possibility of the tail becoming arthritic and becoming painful later in the cat's life. My thought (and this is only my thought) is that the tails are also being docked to allow the breeder to sell a cat that the public associate with the Manx, namely a tailless cat.

Photograph copyright Helmi Flick


What happens to the tailed Manx cats? They will look like "any other cat" more or less so will be less valuable to the breeder. The reason for docking is probably twofold - cosmetic and medical but may be more for cosmetic reasons. Apparently docking is more prevalent in the USA.

Manx cats come in every color and pattern and hair length. The long haired Manx is called the Cymric by some Registries. The Cat Fanciers Association do not accept the pointed or Himalayan pattern. Helmi's photographs provide the best illustration of appearance. Please click on the thumbnails for more detail on the appearance. Other than the lack of a tail the outstanding feature is the fact that, more so than normal, the back legs are longer than the front. That accounts for the posture in some of the photographs. Manx cats have stocky cobby bodies.
2

Health  - manx cat health problems

Note: Manx cat breeders manage/control these health issues.

A cat's health is the most important issue and about 60% or more of visitors to this website consider a cat breed's health to be very important. Mutated genes sometimes don't just cause a single change in the physical appearance of the cat. Often there are other abnormalities, which are detrimental to the cat's health (e.g. Dwarf Cats, Bob-tail).

credit: weretable

In this instance the mutated gene that leaves the cat without a tail also shortens the spine (this is an extension of losing the tail). This causes secondary health problems that ultimately prove fatal. The answer as usual comes down to wise and sensible breeding with the cat's wellbeing as the center of interest.

This condition is called Manx Syndrome. It most commonly occurs when rumpy is bred to rumpy. The breeder therefore breeds from tailed Manx Cats to minimize the condition. The client is protected as the breeder will hold onto to the cat up until a time when the condition manifests itself (max 4 months after birth). This also allows Manx Cats to be socialized.

Breeding evidence indicates that cats that are homozygous (two copies of the "defective" gene at the same locus [location on the chromosome]) die before birth. In other word the gene is lethal in homozygous form, which is potentially a desirable form as the cat would breed "true" (all offspring would be tailless). The Manx cat will never breed true because of this deficiency. Also the size of Manx litters are small as a quarter of Manx/Manx mating are lost.

The M gene's presence is not solely demonstrated in the shortened tail. Its effect is present throughout the vertebral column of Manx cats and elsewhere. Here is a list:


Area of body Defect
Upper spine (towards head) Individual vertebra are slightly shortened
Lower part of spine Decrease in number and fusion of vertebra
Sacral Bone Badly developed
Pelvic Bone badly developed
Spinal cord Some cases of Spina Bifida. This is a congenital defect of the spine due to a defective vertebra
Bowel Occasional "bowel stoppage" due to a narrow anal opening
Spine Sometimes terminates too short causing various problems such as hind leg paralysis.


It would seem that a number of kittens are born with severe disabilities, which the cat breeder will have to euthanize. On this basis the Manx cat as a breed is not in my opinion viable and I am surprised that this cat is registered with the CFA, TICA and FIFe (this is only my view of course).

One last health issue. Manx cats can as a result of spinal developmental deformities suffer from constipation and fecal incontinence -see below.

Manx cats - Updates 18-10-08 - some more detail:

The Manx gene can affect these areas of the body resulting in abnormalities.

Spina Bifida
This is a malformation of the vertebrae and the spinal cord because of the nonfusion of the neural tube and vertebrae arches at the sacrococcygeal junction. This could cause the cat to suffer from the following:-
  • Fecal incontinence (due to be able to close the anus)
  • Urine incontinence may also be present
  • Megacolon
  • Constipation
  • hind limb weakness
  • hind limb incoordination
  • hopping rather than running
Other spinal cord defects and brain abnormalities have been reported.

Atresia ani
This is a disorder of the anus. It is also called imperferate anus. A membrane covers the anal opening. The sphincter muscle is intact but could be weak and there is a nerve supply. Symptoms are no feces, abdominal extension and bulging perineum and tenesmus. It is resolved through surgery.

Rectal prolapse
Straining to pass feces can cause rectal prolapse. This is when the walls of the rectum protrude through the anus and are visible. It can treated and should be treated quickly to minimize the degree of treatment required.

Pyoderma 
This is a puss filled skin disease. The dimple for a tail is apparently susceptible to this disease. The dimple should be kept clean. If it develops the hair should be clipped and antibiotic cream and astringent (a chemical that constricts body tissue) applied.

Other points of interest

  • Good jumper
  • Powerful hind quarters
  • Medium sized
  • Slow developers
  • Hind legs noticeably longer than front legs
  • Good hunter (probably used as a mouser in days gone by)
  • Note: a tailless cat is not automatically a Manx Cat - there is a genetic difference between the Manx and the Domestic Tailless Cat
  • There is a local variety of bobtail cats that are like the Manx and which are found in and around Cape Breton, Nova Scotia. This is about 500 miles north east of Maine, USA, the home of the Maine Coon cat. These tailless cats are called the Cape Breton Bobtail. They are less cobby than the Manx.

Manx cats breeders

I have picked these on the basis that they have a good presence on the internet (as at late 2007 - things change, some of these links may become broken in time despite checks). This indicates that they have been around for a reasonable time at least. Please check out "on the ground".

Karella Manx
This breeder located in rural Pennsylvania, USA. Concerned breeder. Google Page Rank for site. No Alexa rank (low traffic relatively) for website. Ranked top of Google for Manx Cat search. Looks good. Good views on docking of tail.

Vagary Mews Manx
Located in North Carolina, USA. Website is Alexa ranked and it is Google Page ranked. First page of Google listing.

Dey Dream Manx
Once again this website came up on page one of Google. Small cattery. Manx specialists. Located in Central New Jersey, Eastampton, NJ 08060.

Briar-Brae Cattery
Listed page 3 on Google search. No Alexa listing but claim to be in business of breeding Manx cats since 1961. Located in Rio Rancho, New Mexico. Google page ranked.

Titania Cattery - Champion Manx Cats
Located here (plus directions) Take I-80, I-81, or the Pennsylvania Turnpike NE Extension Rte. 476 to Wilkes Barre. Listed page 3 Google. No Alexa rank (low traffic). White Website.



Notes:

  1. "Founder Effect" means that the effect of creating ("founding") a new population from a small number of founding original cats of the breed.

    Credit: weretable
  2. The word "penetration" in genetic terms describes the proportion of individuals who demonstrate the physical characteristics of the mutated gene in comparison to the number of individuals who carry the mutated gene. So high penetration means a high proportion of Manx Cats have short or no tail when they have the tailless gene.
  3. "Pet Quality" is not a lesser quality.

Sources:
  • http://www.isleofman.com
  • CFA
  • http://www.smuggling.co.uk
  • Wikipedia - definitions
  • http://www.fanciers.com
  • http://www.karellomanx.com/
  • Messybeast
  • Robinson's Genetics for Cat Breeders and Veterinarians
  • Medical, Genetic & Behavioral Aspects of Purebred cats Edited by Ross D. CLark DVM.

Webshots Best Photographs of this tailless cats

These cats are described as Manx cats but are probably not purebred or registered. They are though (a) the most interesting on Webshots and (b) they show the Manx tail or lack if it.

Rumpie kitten
copyright painted cats


zman2
copyright amisgrrl


Harry
copyright arlenecwv


outside2
copyright amisgrrl