Small Japanese field mouse

The small Japanese field mouse, Apodemus argenteus, is a rodent of the family Muridae endemic to Japan, where its range runs from Hokkaido to Kyushu. It resembles its larger counterpart, the large Japanese field mouse Apodemus speciosus, but is the smaller of the two: the body is 65 to 100 millimetres long, the tail 70 to 110 millimetres and the weight 10 to 20 grams. Its tail is slightly longer than its body, the opposite of the large species, whose tail is shorter than its body, and this proportion helps tell the two apart. The available article gives little about its habitat, diet or conservation rating.