The large Japanese field mouse has a reddish-brown back and a white underside. It moves over the ground and fallen logs at night and sometimes stores food underground.
It has a reddish-brown back, a white underside, large ears, and a tail nearly as long as its body.
It is nocturnal and moves over the ground and fallen logs. It eats roots, seeds, insects, and other foods, and may store food underground.
An extinction-risk assessment has not been added yet.