Origin of the domestic dog or the result of natural introgression as the dog expanded across Eurasia. In 2018, a study found a small amount of dog ancestry in 62% of Eurasian wolf specimens looked at, that hybridization had occurred across a wide number of timescales and not just recently, however in contrast there was almost no admixture detected in the North American specimens. There was introgression of the male dog into the wolf, but also one hybrid detected which was the result of a male wolf crossed with a female dog. Wolves have maintained their phenotype differences from the dog, which indicates low-frequency hybridization.
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,