Magawa the rat is retiring. And while most rats step away from their active careers with little to no fanfare, this rodent is a bit different: he's directly responsible for saving the lives of untold numbers of men, women, and children. Magawa - who spent five years (2016-2021) sniffing out hazardous, unexploded weapons of war dotting the Cambodian countryside - is credited with leading his handlers to more than 100 buried explosive devices. This hero is a Gambian pouched rat. Like many rodents, Gambian rats have poor eyesight, but make up for it with an exceptional sense of smell. Magawa's trainers at the Belgian nonprofit APOPO taught him to sniff out military-grade explosives. The rat is essentially a living sensor, capable of detecting land mines, bombs, and other explosives. Minefields have proven especially deadly in postwar Cambodia. Experts believe that military forces left behind somewhere between 4 and 6 million idle land mines at the close of the Cambodian Civil War. Between 1979 and 2020, abandoned mines and other explosive devices killed 19,789 Cambodians and injured or maimed 45,102 others. Magawa completed his training in Africa, and then traveled to Cambodia, where he spent five years searching for whiffs of explosives. In his half-decade career, the big rat "helped clear over 225,000 square metres of land," according to APOPO. All in all, he led his handlers to 71 land mines and 38 other items of unexploded ordinance.