5 Strange Cases of Accused Animal Spies
2. Eye in the Sky
Pigeons have a long and illustrious history in modern warfare. They were famously used to pass messages between battalions in World War I, but apparently, their military service does not end there.
According to the Smithsonian, B.F Skinner, a forefather of modern behavioral science, wanted to fit the birds with homing devices that would allow them to steer missiles toward their targets. The idea ultimately proved fruitless.
However, the same article reports that the birds were successfully used by the US military to thwart enemy ambushes in the 60s and 70s. The pigeons were guided by laser pointers and trained to drop recording devices if they saw enemy troops. The program successfully saved US troops from 45 potential ambushes.