Wild dog in Australia (5)
I believe the answer is:
dingo
'wild dog in australia' is the definition.
(I've seen this before)
'wild dog in' is the wordplay.
'wild' indicates an anagram.
'dog'+'in'='dogin'
'dogin' is an anagram of 'DINGO'.
(Other definitions for dingo that I've seen before include "Wild dog of Australia" , "Australian native" , "Kipling's yellow dog" , "Wild thing" , "Aussie wild dog" .)