Breed of hound (6)
I believe the answer is:
beagle
'breed of hound' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for beagle that I've seen before include "HMS - was Darwin's ship; hunting dog" , "Type of hound" , "Small, sturdy breed of hound" , "Small short-legged hound" , "Small hunting dog" .)