Hunter and dog needing no introduction (5)
I believe the answer is:
eagle
'hunter' is the definition.
(I've seen this before)
'dog needing no introduction' is the wordplay.
'dog' becomes 'beagle' (beagle is a kind of dog).
'needing no introduction' means to remove the first letter.
'beagle' with its initial letter taken off is 'EAGLE'.
'and' is the link.
(Other definitions for eagle that I've seen before include "Valuable piece" , "King of birds" , "flier" , "Bird with hooked bill and long broad wings" , "High-flyer" .)