Attack made by quiet wild cat (6)
I believe the answer is:
pounce
'attack' is the definition.
(I've seen this before)
'by quiet wild cat' is the wordplay.
'by' is a charade indicator (letters next to each other).
'quiet' becomes 'p' (music symbol for 'piano', ie soft or quiet).
'wild cat' becomes 'ounce' (I've seen this before).
'p'+'ounce' is 'POUNCE'.
'made' is the link.
(Other definitions for pounce that I've seen before include "Strike" , "Swoop down suddenly" , "Jump down on suddenly" , "Spring down on and grasp" , "(Of cat) sudden leap to seize prey" .)