Hustle around with a bloodhound (6)
I believe the answer is:
sleuth
'a bloodhound' is the definition.
(sleuth is a term for a bloodhound)
'hustle around' is the wordplay.
'around' indicates anagramming the letters.
'hustle' with letters rearranged gives 'SLEUTH'.
'with' acts as a link.
(Other definitions for sleuth that I've seen before include "Detective who follows a trail" , "Sherlock Holmes, for example" , "A detective like Sherlock - given to hustle" , "Holmes, for one" , "A detective like Sherlock Holmes" .)