Origin of the domestic dog to the domestic dog and modern wolf lineages. The gray wolf is thought to be ancestral to the domestic dog, however its relationship to "C. variabilis", and the genetic contribution of "C. variabilis" to the dog, is the subject of debate. The Zhokhov Island (8,700 YBP) and Aachim (1,700 YBP) canid haplotypes fell within the domestic dog clade, cluster with S805, and also share their haplotypes with – or are one mutation away from – the Tibetan wolf ("C. l. chanco") and the recently-extinct Japanese wolf ("C. l. hodophilax"). This may indicate that these canids retained the genetic signature of
Karakachan dog working purebred livestock guarding Karakachan dogs are found in Bulgaria and the United States. The Karakachan was officially approved as a Bulgarian old native breed in 2005. The Karakachan dog may be a descendant of ancient Balkan domestic dogs, possibly since the time of the Thracians. In ancient Thracian treasures, figures were found of big, longhaired guardian dogs with curled tails. The Karakachan dog is part of the origin of the Bulgarian Shepherd dog, with which it should not be confused. Bulgarian Shepherd dog is new construction result of mixing of Karakachan dogs with some big Eurasian breeds - Caucasian