 Remains of the wild native canine dating from the late Edo period (1603 and 1868), the Yama-Inu, has occasionally been confused with the Japanese wolf because of the osteological similarities between the two.The Japanese wolf inhabited Kyushu, Shikoku, and Honshu Islands but not Hokkaido Island.This indicates that its ancestor may have migrated from the Asian continent through the Korean Peninsula into Japan.