Wild dog in dog compound (5)
I believe the answer is:
dingo
'wild dog' is the definition.
(dingo is a kind of wild dog)
'in dog compound' is the wordplay.
'compound' is an anagram indicator.
'in'+'dog'='indog'
'indog' anagrammed gives 'DINGO'.
(Other definitions for dingo that I've seen before include "Wild creature" , "Aus. wild dog" , "Kipling's "Yellow-Dog"" , "Wild animal" , "Wild dog of Oz" .)