Mouse-like animal (5)
I believe the answer is:
shrew
'mouse-like animal' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for shrew that I've seen before include "Mouse-like animal or scolding woman" , "eg Katharina" , "Mouselike insectivore" , "Tamable woman?" , "Long-nosed mammal" .)