I just have to get this off my chest. I'm sure there are others out there that always hear from people, over and over, the same myths about their breed of dog! Most commonly, of course, you pit bull folks... but there are others too, I'm sure! I will start out with my NUMBER ONE pet peeve breed myth, about Chinese Cresteds that even some Crestie BREEDERS believe:
So, other breed folks! Do you always hear a common myth about your breed that many people seem to think is true?Myth: If you breed two Hairless Cresteds together, the puppies will be stillborn! You must always breed a Powderpuff to a Hairless to get live Hairless puppies.
Truth: This misconception is based from the fact that Chinese Cresteds have very unusual genetics. To put it simply, all Cresteds are heterozygous with the 'hairless' gene being an incomplete dominant. This is why they have hair on some parts of their body and none on others, because the dominant hairless gene only partially overrides the coated gene. To put it in a simpler image, Cresteds are basically 'coated dogs with large hairless patches'.
If you remember high school biology class, this genetic combo would be written out as: Hp (H = dominant hairless gene, and p = recessive powderpuff gene). What is TRUE is that the gene combination for HH (which has a 1 in 4 chance to occur whenever an egg is fertilized) results in no puppy being created at all.
The scientific term for this is a 'prenatal lethal' gene combination. The word 'lethal' confuses some people into thinking this means it kills the puppy, but this is wrong, it is simply a 'dud' combination that prevents a zygote from ever becoming a puppy. In dogs, that means the egg will be reabsorbed by the mother soon after fertilization. The term for a genetic defect that would cause stillborn puppies is 'congenital lethal'.