Siamese cat

From Wikipedia, the free encyclopedia
  (Redirected from Siamese cats)
Jump to: navigation, search
Siamese Cat
Siam lilacpoint.jpg
Lilac Point Siamese
Origin Thailand
Breed standards
TICA standard
CFA standard
ACF standard
CCA standard
AACE standard
ACFA/CAA standard
Domestic cat (Felis catus)

The Siamese (Thai: วิเชียรมาศ,  [wí.tɕʰīan.mâːt] ( ), RTGS: Wichianmat, meaning "moon diamond") is one of the first distinctly recognized breeds of Oriental cat. One of several breeds native to Thailand (formerly known as Siam), in the 20th century the Siamese cat became one of the most popular breeds in Europe and North America. The modern Siamese is characterized by blue almond-shaped eyes, a triangular head shape, large ears, an elongated, slender, and muscular body, and point coloration. TICA describes the breed as social, intelligent, and playful into adulthood, often enjoying a game of fetch.[1] Siamese prefer to live in pairs or groups and also seek human interaction. Their Meezer nickname refers to their vocal nature.[citation needed] The Oriental cat was developed in order to expand the range of coat patterns, while the Thai preserves a moderate head and body type.

History[edit]

See also: Thai (cat)
Wankee, born 1895 in Hong Kong, became the first UK Siamese champion in 1898.
While this show quality specimen from 1960 still exhibits relatively moderate characteristics, the breed standard was setting the stage for the modern Siamese, with its call for a "dainty, long and svelte" body, a long head that "taper[s] in straight lines from the ears to a narrow muzzle", "ears large and pricked, wide at the base" and tail "long and tapering".

The pointed cat known in the West as "Siamese", recognized for its distinctive markings, is one of several breeds of cats from Siam described and illustrated in manuscripts called "Tamra Maew" (Cat Poems), estimated to have been written from the 14th to the 18th century.[2] In 1878, U.S. President Rutherford B. Hayes received the first documented Siamese to reach the United States, a cat named "Siam" sent by the American Consul in Bangkok.[3] In 1884, the British Consul-General in Bangkok, Edward Blencowe Gould (1847–1916),[4] brought a breeding pair of the cats, Pho and Mia, back to Britain as a gift for his sister, Lilian Jane Gould (who, married in 1895 as Lilian Jane Veley,[5] went on to co-found the Siamese Cat Club in 1901). In 1885, Gould's UK cats Pho and Mia produced three Siamese kittens—Duen Ngai, Kalohom, and Khromata—who were shown with their parents that same year at London's Crystal Palace Show. Their unique appearance and distinct behaviour attracted attention but all three of the kittens died soon after the show, their cause of death not documented.[6]

By 1886, another pair (with kittens) was imported to the UK by a Miss Eva Forestier Walker (married in 1887 as Mrs Vyvyan or Lady Vyvyan[7]) and her sister, Ada. Compared to the British Shorthair and Persian cats that were familiar to most Britons, these Siamese imports were longer and less "cobby" in body types, had heads that were less rounded with wedge-shaped muzzles and had larger ears. These differences and the pointed coat pattern, which had not been seen before in cats by Westerners, produced a strong impression—one early viewer described them as "an unnatural nightmare of a cat." Over the next several years, fanciers imported a small number of cats, which together formed the base breeding pool for the entire breed in Britain. It is believed that most Siamese in Britain today are descended from about eleven of these original imports. In their early days in Britain, they were called the "Royal Cat of Siam", reflecting reports that they had previously been kept only by Siamese royalty.[8] Later research has not shown evidence of any organised royal breeding programme in Siam.[2] The original Siamese imports were medium-sized, rather long-bodied, muscular, graceful cats with moderately wedge-shaped heads and ears that were comparatively large but in proportion to the size of the head. The cats ranged from substantial to slender but were not extreme in either way.

Modern development[edit]

Lilac point Siamese cat

In the 1950s–1960s, as the Siamese was increasing in popularity, many breeders and cat show judges began to favor the more slender look. As a result of generations of selective breeding, they created increasingly long, fine-boned, narrow-headed cats; eventually the modern show Siamese was bred to be extremely elongated, with a lean, tubular body, long, slender legs, a very long, very thin tail that tapers gradually into a point and a long, wedge-shaped head topped by extremely large, wide-set ears.

By the mid-1980s, cats of the original style had disappeared from cat shows, but a few breeders, particularly in the UK, continued to breed and register them, resulting in today's two types of Siamese: the modern "show-style" Siamese, and the "traditional" Siamese, both descended from the same distant ancestors, but with few or no recent ancestors in common. In addition to the modern Siamese breed category, The International Cat Association (TICA) and the World Cat Federation now accept a breed called the Thai.[9] The TICA Thai includes Siamese cats of the less extreme type or a Wichian Mat imported from Thailand. Other names are "Old Style Siamese", "Classic Siamese", and "Appleheads" (originally a derogatory nickname coined by modern-type Siamese breeders).[10]

Appearance[edit]

Seal tabby silver Siamese
Seal point Siamese kittens
Side view of the head of a seal point adult
Siamese gene chart

The breed standard of the modern Siamese calls for an elongated, tubular, and muscular body and a triangular head, forming a perfect triangle from the tip of the nose to each tip of the ear. The eyes are almond-shaped and light blue, while the ears are large, wide-based, and positioned more towards the side of the head. The breed has a long neck, a slender tail, and fur that is short, glossy, fine, and adheres to the body with no undercoat. Its pointed color scheme and blue eyes distinguish it from the closely related Oriental Shorthair. The modern Siamese shares the pointed color pattern with the Thai, or traditional Siamese, but they differ in head and body type.

The pointed pattern is a form of partial albinism, resulting from a mutation in tyrosinase, an enzyme involved in melanin production. The mutated enzyme is heat-sensitive; it fails to work at normal body temperatures, but becomes active in cooler areas of the skin.[11] This results in dark colouration in the coolest parts of the cat's body, including the extremities and the face, which is cooled by the passage of air through the sinuses. All Siamese kittens, although pure cream or white at birth, develop visible points in the first few months of life in colder parts of their body.[12] By the time a kitten is four weeks old, the points should be sufficiently clearly distinguishable to recognise which colour they are. Siamese cats tend to darken with age, and generally, adult Siamese living in warm climates have lighter coats than those in cool climates. Originally the vast majority of Siamese had seal (extremely dark brown, almost black) points, but occasionally Siamese were born with blue (a cool grey) points, genetically a dilution of seal point; chocolate (lighter brown) points, a genetic variation of seal point; or lilac (pale warm gray) points, genetically a diluted chocolate. These colours were at first considered "inferior" seal points, and were not qualified for showing or breeding. All of these shades were eventually accepted by the breed associations, and became more common through breeding programmes specifically aimed at producing these colours. Later, outcrosses with other breeds developed Siamese-mix cats with points in other cat colours and patterns including Red and Cream point, lynx (tabby) point, and tortoise-shell ("tortie") point.

In the United Kingdom, all pointed Siamese-style cats are considered part of the Siamese breed. In the United States, the major cat registry, the Cat Fanciers' Association, considers only the four original colourations as Siamese: seal point, blue point, chocolate point, and lilac point. Oriental cats with colourpoints in colours or patterns aside from these four are considered Colorpoint Shorthairs in the American cat fancy.

Many Siamese cats from Thailand had a kink in their tails but over the years, this trait has been considered a flaw and breeders have largely eradicated it, although it persists among street cats in Thailand.

Temperament[edit]

Siamese are usually very affectionate and intelligent cats, renowned for their social nature. Many enjoy being with people and are sometimes described as "extroverts". Often they bond strongly to a single person. Some Siamese are extremely vocal, with a loud, low-pitched voice—known as "Meezer", from which they get one of their nicknames[6]—that has been compared to the cries of a human baby, and persistent in demanding attention. These cats are typically active and playful, even as adults, and are often described as more dog-like in behavior than other cats.[13][14]

Health[edit]

This Siamese cat demonstrates the once common cross-eyed trait that has largely been bred out.

Based on Swedish insurance data, which only tracked cats up to 12.5 years, Siamese and Siamese-derived breeds have a higher rate of mortality compared to other breeds. The median lifespan of the Siamese group was somewhere between 10 to 12.5 years. 68% lived to 10 years or more and 42% to 12.5 years or more. The majority of deaths were caused by neoplasms, mainly mammary tumors. The Siamese also has a higher rate of morbidity. They are at higher risk of neoplastic and gastrointestinal problems but have a lower risk of feline lower urinary tract disease.[15][16] Vet clinic data from England shows a higher median lifespan of 14.2 years.[17]

The most common variety of progressive retinal atrophy (PRA) in cats (among them the Abyssinian, the Somali, and the big group of Siamese-related breeds) is related to a mutation on the rdAc-gene and a DNA-test is available.[18]

The same albino allele that produces coloured points means that Siamese cats' blue eyes lack a tapetum lucidum, a structure which amplifies dim light in the eyes of other cats. The mutation in the tyrosinase also results in abnormal neurological connections between the eye and the brain.[19] The optic chiasm has abnormal uncrossed wiring; many early Siamese were cross-eyed to compensate, but like the kinked tails, the crossed eyes have been seen as a fault and due to selective breeding the trait is far less common today. Still this lack of a tapetum lucidum even in uncross-eyed cats causes reduced vision for the cat at night. This trait has led to their dependence and interest in humans, as it affects their hunting ability, a desirable trait for many owners. However it also makes them vulnerable to urban dangers such as night-time vehicular traffic. Unlike many other blue-eyed white cats,[citation needed] Siamese cats do not have reduced hearing ability.

Breeds derived from the Siamese[edit]

Balinese are also known as Longhaired Siamese, being distinguished by coat length
Orientals have the same head and body type but green eyes and a wide variety of coat patterns
  • Balinese – Natural mutation of the Siamese cat; a longhaired Siamese. In the largest US registry, the Cat Fanciers Association (CFA), limited to the four traditional Siamese coat colours of seal point, blue point (a dilute of seal point), chocolate point, and lilac point (a dilute of chocolate point). Other registries in the US and worldwide recognise a greater diversity of colours.
  • Burmese is a breed of domesticated cats descended from a specific cat, Wong Mau, who was found in Burma in 1930 by Dr. Joseph Cheesman Thompson. She was brought to San Francisco, California, where she was bred with Siamese. While technically not derived from Siamese, the breed was considered a form of Siamese for many years, leading to crossbreeding.
  • Havana Brown resulted from crossing a chocolate point Siamese with a black cat.
  • Colorpoint Shorthair – a Siamese-type cat registered in CFA with pointed coat colours aside from the traditional CFA Siamese coat colours; originally developed by crosses with other shorthair cats. Considered part of the Siamese breed in all other cat associations, but considered a separate breed in CFA. Variations can include Lynx Points and Tortie Points.
  • Himalayan - Longhaired breed originally derived from crosses of Persians to Siamese and pointed domestic longhair cats in order to introduce the point markings and the colours chocolate and lilac. After these initial crosses were used to introduce the colours, further breed development was performed by crossing these cats only to the Persian breed. In Europe, they are referred to as colourpoint Persians. In CFA, they are a colour division of the Persian breed.
  • Javanese – a longhaired version of the Colorpoint Shorthair in CFA. In Europe, it is an obsolete term for the longhaired version of the Oriental Shorthair.
  • Ocicat – a spotted cat originally produced by a cross between Siamese and Abyssinian.
  • Oriental Shorthair – a Siamese-style cat in non-pointed coat patterns and colours, including solid, tabby, silver/smoke, and tortoise-shell.
  • Oriental Longhair – a longhaired version of the Oriental Shorthair.
  • Savannah – The Savannah is a domestic hybrid cat breed. It is a cross between a serval and a domestic cat. (The first was bred with a Siamese)
  • Snowshoe – a cream and white breed with blue eyes and some points that was produced through the cross-breeding of the Siamese and bi-coloured American Shorthair in the 1960s.
  • Thai Cat – also called the Wichian Mat or Old Style Siamese, the original type of Siamese imported from Thailand in the 19th century and still bred in Thailand today; and throughout the first half of the 20th century, the only type of Siamese bred in the West.[20]
  • Tonkinese – originally a cross between a Siamese cat and a Burmese. Tonkinese x Tonkinese matings can produce kittens with Burmese "sepia" pattern, Siamese "pointed" pattern, or a Tonkinese "mink" pattern which is something in between the two, with less pattern contrast than the Siamese but greater than the Burmese, and with aqua eyes.
  • Mekong bobtail (Thai bobtail)

Famous Siamese cats[edit]

Real[edit]

Shan, with Susan Ford

Fictional[edit]

See also[edit]

  • Thai (cat), a.k.a. Old-style Siamese or Traditional Siamese

References[edit]

  1. ^ "SIAMESE". The International Cat Association. 
  2. ^ a b Clutterbuck, Martin R. (2004). Siamese Cats: Legends and Reality. Bangkok: White Lotus. ISBN 974-480-053-4. 
  3. ^ "Siam: America's First Siamese Cat". Retrieved 2009-02-13. 
  4. ^ "Edward Blencowe Gould or Owen Gould". Archived from the original on March 11, 2005. Retrieved 2006-08-14. 
  5. ^ General Register Office Register of Marriages SEP 1895 5b 217 NEWTON A. Victor Herbert Veley = Lilian Jane Gould
  6. ^ a b c d Connor, Janine (2007). I am Siamese - How to raise Siamese cats and kittens. ISBN 978-0-9804291-0-7. 
  7. ^ General Register Office Register of Marriages MAR 1887 1a 19 PADDINGTON Courtney Bouchier Vyvyan = Eva Catherine F. Walker
  8. ^ Weir, Harrison (1889). Our Cats. London. ISBN 1-84664-097-0. 
  9. ^ The International Cat Association. "Thai Breed Standard". Retrieved 9 September 2009. 
  10. ^ Dr. Cris Bird. "The Types of Siamese". Retrieved 2006-09-27. 
  11. ^ D. L. Imes et al. (April 2006). "Albinism in the domestic cat (Felis catus) is associated with a tyrosinase (TYR) mutation" (Short Communication). Animal Genetics 37 (2): 175. doi:10.1111/j.1365-2052.2005.01409.x. PMC 1464423. PMID 16573534. Retrieved 2006-05-29. 
  12. ^ Ye X.C., Pegado V., Patel M.S., Wasserman W.W. Strabismus. genetics across a spectrum of eye misalignment disorders. 
  13. ^ "Breed Portrait of the Siamese Cat" (PDF document). Cat Fanciers Federation. Retrieved 2006-08-10. 
  14. ^ Myrna M. Milani, D.V.M. (1987). The Body Language and Emotion of Cats. New York: Quill. ISBN 0-688-12840-8. 
  15. ^ Egenvall, A.; Nødtvedt, A.; Häggström, J.; Ström Holst, B.; Möller, L.; Bonnett, B. N. (2009). "Mortality of Life-Insured Swedish Cats during 1999—2006: Age, Breed, Sex, and Diagnosis". Journal of Veterinary Internal Medicine 23 (6): 1175–1183. doi:10.1111/j.1939-1676.2009.0396.x. PMID 19780926. 
  16. ^ Egenvall, A.; Bonnett, B. N.; Häggström, J.; Ström Holst, B.; Möller, L.; Nødtvedt, A. (2010). "Morbidity of insured Swedish cats during 1999–2006 by age, breed, sex, and diagnosis". Journal of Feline Medicine & Surgery 12 (12): 948–959. doi:10.1016/j.jfms.2010.08.008.  edit
  17. ^ doi:10.1177/1098612X14536176
    This citation will be automatically completed in the next few minutes. You can jump the queue or expand by hand "n=31, median=14.2, IQR 10.8-19.0, range 0.9-21.1"
  18. ^ "DNA testing for PRA". PawPeds. Retrieved 12 January 2012. 
  19. ^ Jon H, Kaas (2005). "Serendipity and the Siamese cat: The discovery that genes for coat and eye pigment affect the brain". ILAR Journal 46 (4): 357–363. PMID 16179744. 
  20. ^ Amy Rebeka. "Thai Cat History". Retrieved 2007-05-29. 

External links[edit]