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Many fanciers and CFA judges considered the shift in look "a contribution to the breed."A Persian with a visible muzzle in contrast with a Persian with its forehead, nose and chin in vertical alignment, as called for by CFA's 2007 breed standard.The shorter the muzzle, the higher the nose tends to be.Recognized by the cat fancy since the late 19th century, it was developed first by the English, and then mainly by American breeders after the Second World War.Some cat fancier organizations' breed standards subsume the Himalayan and Exotic Shorthair as variants of this breed, while others treat them as separate breeds.The over-accentuation of the breed's characteristics by selective breeding (called extreme- or ultra-typing) produced results similar to the peke-faced Persians.The term peke-face has been used to refer to the ultra-typed Persian but it is properly used only to refer to red and red tabby Persians bearing the mutation.The selective breeding carried out by breeders has allowed the development of a wide variety of coat colors, but has also led to the creation of increasingly flat-faced Persians.
It is also known as the "Persian Longhair" in the English-speaking countries.As many breeders in the United States, Germany, Italy, and other parts of the world started to interpret the Persian standard differently, they developed the flat-nosed "peke-face" or "ultra-type" over time, as the result of two genetic mutations, without changing the name of the breed from "Persian".Some organizations, including the Cat Fanciers' Association (CFA), today consider the peke-face type as their modern standard for the Persian breed.TICA has a very general standard, that does not specify a flattened face.In the late 1950s a spontaneous mutation in red and red tabby Persians gave rise to the "peke-faced" Persian, named after the flat-faced Pekingese dog.
Not all cat fanciers agreed with the distinction of the two types, and in the 1903 work The Book of the Cat, Francis Simpson states that "the distinctions, apparently with hardly any difference, between Angoras and Persians are of so fine a nature that I must be pardoned if I ignore the class of cat commonly called Angora". Persian coats consists of a woolly under coat and a long, hairy outer coat.