Origin of the domestic dog matched across Eurasia and its branch is phylogenetically rooted in the same sequence as the Altai dog (not a direct ancestor). The subclade d2 hybrid haplotypes are found in 2.6% of South-West Asian dogs. Haplogroup E: Derived from post-domestication wolf–dog hybridization in East Asia, (rare distribution in South-East Asia, Korea and Japan). Haplogroup F: Derived from post-domestication wolf–dog hybridization in Japan. A study of 600 dog specimens found only one dog whose sequence indicated hybridization with the extinct Japanese wolf. It is not known whether this hybridization was the result of humans selecting for phenotypic traits from local wolf populations
Small Greek Domestic Dog It is always in motion, showing the dog's joy. The coat of this dog forms a brush under its tail. This breed of dog has large eyes which vary in shape from round to more of an almond shape. They are bright, intelligent, and are not deep-set. The color goes with the color of the coat, but they will never be transparent or blue. The muzzle "tapers easily to the nose", and the topline is level. The nose of the Small Greek Domestic Dog has well-opened nostrils. It is not too large compared to the muzzle, and it is moist,