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
Ticks of domestic animals classification of the Acari, including the two families of ticks of importance to domestic animals is in the article Mites of livestock. "Amblyomma" species are widespread on domestic animals throughout tropical and subtropical regions. Typical "Amblyomma" species are: "Amblyomma americanum", the lone star tick of southern and eastern USA; "Am. cajennense", the Cayenne tick of South America and southern USA; "Amblyomma variegatum", the bont tick of Africa and the Caribbean (see Gallery below for photograph of female and male). A typical "Rhipicephalus" species is "Rhipicephalus sanguineus", the tropical dog tick, specialized to feed only on dogs. It is distributed globally