The xoloitzcuintle (mexican hairless dog) is a ancient breed that has more than 3500 years of existence, they where found by the astecas in the wild and they where raised from sacrifices and as food. They are 3 sices miniature, medium and estandar. The most notable fact of this dog breed is that they don't have hair, in fact a forlock is a fault to the estandar. Other characteristic is that a pure dog newer will have a complete set of teeth is related to the hairless gen. See this picture Genary they born some dogs with fur, but they arent accepted by the standar, the AKC don't reconice this breed,is not common even in mexico. In fact in the mexico chapultepec zoo are some xolo in exebition.