Though the well-known phrase "A dog is a man's best friend" may not have been used earlier than the late 19th century, the basic ofthat friendship is vastly older. ... The diversity and peculiarity of native Japanese breeds may also (3) the hypothesis that the homeland of mankind's oldest animal friend is indeed East Asia.
――慶応義塾大学 理工学部(2月14日実施)――2005年