Yezo (northern part of Meiji-era Japan, esp. Hokkaido, but also Sakhalin and the Kuril Islands); Edo-period realm of the Ainu (as opposed to the Japanese) comprising most of Hokkaido
Hokkaido squirrel (subspecies of red squirrel, Sciurus vulgaris orientis)
Hokkaido wolf (Canis lupus hattai, extinct)