The English sign "dog" denotes, for example, a member of the species "Canis familiaris". "Canis familiaris dingo" Meyer 1793 with the domestic dog being the subspecies "Canis familiaris familiaris". The domestic dog, "Canis familiaris", also has been found. The Australian Government's Australian Faunal Directory lists the dingo under "Canis familiaris". The origin of the domestic dog ("Canis lupus familiaris" or "Canis familiaris") is not clear. In 2015, the "Taxonomy of Australian Mammals" classed the dingo as "Canis familiaris". The domestic dog ("Canis familiaris") was introduced to New Guinea about 2,000 years ago. He classified the domestic dog as "Canis familiaris", and the wolf as "Canis lupus". The first animal to be domesticated in the Philippines was the dog, "Canis familiaris".