harvest mouse; Eurasian harvest mouse
A very small rodent (Mus minutus) found in grassy areas; the Japanese name literally means 'reed mouse'.
The harvest mouse is the smallest mouse in Japan.
I found a harvest mouse nest in the grassy area by the river.
Katakana spelling is common for this animal name; usually written in kana.
Kanji form is rare and may not be widely recognized; it is not a priority form.
From 萱 (kaya, 'reed' or 'thatch grass') + 鼠 (nezumi, 'mouse'), referring to its habitat in grassy areas.