Layka
“The three-year-old dog was accompanying Staf Sgt. Julian McDonald on a SPEC OPS mission when they came across a house wired with explosives. Julian sent Layka into the house, where she discovered an insurgent waiting for them to enter the door. Layka successfully subdued the terrorist, but sustained severe injuries. Her front left leg had to be amputated, but there is little doubt in Julian McDonald’s mind that she saved her life.” – Source: COED.com