Pound hound (4)
I believe the answer is:
mutt
'pound hound' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mutt that I've seen before include "Chump" , "Mongrel dog - foolish person" , "Thematic type [DOG]" , "Dog of mixed breed" , "Setter perhaps" .)