Dog name for a bird (6)
I believe the answer is:
curlew
'a bird' is the definition.
(curlew is a kind of bird)
'dog name' is the wordplay.
'dog' becomes 'cur' (I've seen this before).
'name' becomes 'lew' (**).
'cur'+'lew'='CURLEW'
'for' acts as a link.
(Other definitions for curlew that I've seen before include "Shorebird with long down-curved bills" , "Bird with long down-curved bill" , "Large wader of the sandpiper family" , "Wading bird with long slender curved bill" , "Wading bird with long down-curved beak" .)