Alternative spelling of 谷地鼠 (“Japanese red-backed vole”)

a Japanese red-backed vole (Myodes andersoni)

a mousetrap

(colloquial) a pyramid scheme

Synonym of 赤鼠 (akanezumi, “large Japanese field mouse”)

砂鼠: Mongolian gerbil (Meriones unguiculatus)

A common word problem in Japan. It says that "In January, there is a pair of mice. They copulate and bear twelve children. The next month, 7 pairs of mice copulate and bear twelve children respectively. How many mice are there in December?"

小頭鼠海豚: a vaquita

水畑鼠: a European water vole

荒地鼠: a gerbil