Dog from multiple grey wolf populations, with the dingo and New Guinea singing dog "breeds" having developed at a time when human populations were more isolated from each other. In the third edition of "Mammal Species of the World" published in 2005, the mammalogist listed under the wolf "Canis lupus" its wild subspecies, and proposed two additional subspecies: ""familiaris" Linneaus, 1758 [domestic dog]" and ""dingo" Meyer, 1793 [domestic dog]". Wozencraft included "hallstromi" - the New Guinea singing dog - as a taxonomic synonym for the dingo. Wozencraft referred to the mDNA study as one of the guides in forming his decision.
Origin of the domestic dog dogs in the early stages of domestication might be indistinguishable from wolves. According to indigenous North Americans, over the past 20,000 years the canids living with them were wolves that could not be distinguished as dogs. The problem in attempting to identify when and where domestication occurred is the possibility that the process of domestication occurred in a number of places and at a number of times throughout prehistory. Early dog remains have been found in different parts of the world. This suggests that dog domestication may have taken place in different regions independently by hunter-gatherers, in some cases at