Formosan Squirrel (Callosciurus erythraeus thaiwanensis) タイワンリス
The Fromosan Squirrel was introduced to Japan. It has been a problem Kanagawa at least is trying to eradicate it. Here a couple are playing in the trees near a temple. Kamakura 2009
Somehow, I think that it will be tough eradicating the Formosan Squirrel in Japan. Kamakura 2009