Wild dog in pound in Gosport (5)
I believe the answer is:
dingo
'wild dog' is the definition.
(I know that dingo is a type of wild dog)
'in pound in gosport' is the wordplay.
'in' indicates the answer is hidden within the clue.
'DINGO' is hidden in the letters of 'pound in gosport'.
(Other definitions for dingo that I've seen before include "One running wild in Australia" , "Scavenger" , "Aus. wild dog" , "Want a dog" , "Kipling's yellow dog" .)