Although hairless dogs have been found in many places in the world, it is unlikely that the origins of the modern Chinese crested are in China.The breed was believed by some to have originated in Africa and was called the African Hairless Terrier in several 19th Century texts,however, there is genetic evidence that shows a shared origin with the Mexican Hairless (Xoloitzcuintli).In the 1950s, Debora Wood created the "Crest Haven" kennel and began to purposefully breed and record the lineages of her Chinese crested dogs. The famous burlesque dancer Gypsy Rose Lee also bred Chinese cresteds, and upon her death her dogs were incorporated into Crest Haven. These two lines are the true foundation of every Chinese crested alive today. Ms. Wood also founded the American Hairless Dog Club in 1959, which was eventually incorporated into the American Chinese Crested Club (ACCC) in 1978. The ACCC became the US parent club for the breed when the Chinese crested was recognized by the American Kennel Club thirteen years later, in 1991.The Chinese crested was officially recognised by the Fédération Cynologique Internationale in 1987, by The Kennel Club (UK) in 1981, by the American Kennel Club in 1991,and by the Australian National Kennel Council in 1995. There is a rescue group that specializes in rescuing the breed from shelters in the United States, It's called Naked K-9 and small dog rescue. They always have Chinese Crested Dogs available for adoption.
The Hairless allele (the wild type) is a dominant (and homozygous prenatal lethal) trait, while the Powderpuff allele acts as a simple recessive trait in its presence. Zygotes that receive two copies of the Hairless allele will never develop into puppies. Thus all Chinese cresteds carry at least one copy of the Powderpuff allele.
The Powderpuff trait cannot be bred out because it is carried by all Chinese cresteds (even the hairless ones). All Hairless Chinese crested have the ability to produce Powderpuff puppies, even when they are bred to another Hairless. On the other hand, Powderpuffs bred to another Powderpuff can never produce hairless puppies, since they do not carry the Hairless gene.
Data refer : http://en.wikipedia.org/wiki/Chinese_Crested_dog
