Gunner (born c. August 1941-April 30, 1955) was a male kelpie dog who became notable for his reliability to accurately alert Allied air force personnel that Japanese military aircraft were approaching Darwin during the Second World War.

2 Squadron, Royal Australian Air Force (RAAF) who heard the dog whimpering, as result of a broken front leg.

[2][3][4] The dog was taken to a field hospital, where a medical officer reportedly insisted that he could not treat a patient without knowing their name and number.

[5] The young dog was badly shaken by his experiences, but quickly responded to the attention of Westcott and other personnel from 2 Squadron.

[1] Gunner's hearing was so acute he was able to warn RAAF personnel of approaching Japanese aircraft, up to 20 minutes before they arrived and before they were detected by the rudimentary radar systems available at the time.