Crossbred hunting dog (7)
I believe the answer is:
lurcher
'crossbred hunting dog' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for lurcher that I've seen before include "Dog like greyhound" , "Greyhound-like dog" , "Not a sure-footed" , "moving suddenly and unsteadily?" , "The dog to stagger" .)