Hunt, front left (5)
I believe the answer is:
prowl
'hunt' is the definition.
(I've seen this before)
'front left' is the wordplay.
'front' becomes 'prow' (prow is a kind of front).
'left' becomes 'l' (common abbreviation).
'prow'+'l'='PROWL'
(Other definitions for prowl that I've seen before include "Stalk about" , "Steal around predatorily" , "Walk around predatorily" , "Walk menacingly" , "Move in search of prey" .)