鼠 - rat, mouse, dark gray

mouse; rat

rat's nest

groin; inguinal region

whistling of a prostitute (to attract customers)

pilfering

small fry; unimportant people

damage by rats or mice

groin; inguinal region

guinea pig (any of five guinea pig species, esp. Cavia porcellus)

squirrel

silver gray; silver grey

rat poison; rodenticide