Time ran out for Lucky last month in the mountains of Afghanistan, after being rescued from the pound and drafted into the Australian Army.
The 22-month-old golden retriever-Labrador cross is now missing in action, presumed dead, after vanishing during the firefight that killed Commando Sergeant Todd Langley, Australia's 28th death in the decade-long war.
News of the explosive detection dog's probable death was delayed until all efforts to find him had failed, including ground searches, repeated calls for the dog on a loudspeaker and the offer of a cash reward.
Lucky had been found in the Canberra pound only hours before he was to have been euthanised, drafted in September last year as "EDD 499", and later left for Afghanistan after graduating from the School of Engineers' explosive detection training course.
Bomb detection dogs have become crucial in the fight against insurgents, with improvised devices responsible for many of the army's casualties.