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Shar Pei
The Shar Pei, or Chinese Shar-Pei, is a breed of dog known for its distinctive features of deep wrinkles and a blue-black tongue. The breed comes from China. The name (沙皮, pinyin: ''shā pí''; English name probably derived from British spelling of the Cantonese equivalent, ''sā pèih'') translates to "sand skin" and refers to the texture of its short, rough coat. As puppies, Shar Pei have numerous wrinkles, but as they mature, these wrinkles loosen and spread out as they "grow into their skin". Shar Pei were named in 1978 as one of the world's rarest dog breeds by ''TIME'' magazine and the ''Guinness World Records''. It is one of the ancient dog breeds, but the American Kennel Club did not recognize the breed until 1992.〔(Information from the American Kennel Club )〕
==Lineage==
Nearly all dog breed's genetic closeness to the gray wolf is due to admixture. However, several Arctic dog breeds show a genetic closeness with the now-extinct Taymyr wolf of North Asia due to admixture. These breeds are associated with high latitudes - the Siberian husky and Greenland dog that are also associated with arctic human populations, and to a lesser extent the Shar Pei and Finnish spitz. An admixture graph of the Greenland dog indicates a best-fit of 3.5% shared material, however an ancestry proportion ranging between 1.4% and 27.3% is consistent with the data. This indicates admixture between the Taymry wolf population and the ancestral dog population of these 4 high-latitude breeds. This introgression could have provided early dogs living in high latitudes with phenotypic variation beneficial for adaption to a new and challenging environment. It also indicates the ancestry of present-day dog breeds descends from more than one region.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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