Dogs were domesticated in East Asia from East Asian wolves (Canis lupus chanco) more than 15,000 years ago. That date is estimated from the rate of molecular substitution of mitochondrial DNA and the age of ancient dog remains. Domesticated dogs accompanying people migrated and dispersed throughout the entire world.
Dogs have always migrated with people. The earliest-known migrants to Japan, the Jomon people, are thought to have brought dogs to the Japanese archipelago some ten to twelve thousand years ago. The oldest dog skeletal remains discovered in Japan date from 9,500 before present (B.P.).