At the height of the Cold War, the US Central Intelligence Agency was willing to try just about anything to gain an advantage over the dreaded Communists. The agency considered using exploding cigars or seashells to remove Cuban leader Fidel Castro; they employed psychics to attempt "remote viewing" of Russian military secrets; and the CIA even put the Soviets on the business ends of clairvoyant minds to attempt mind-control.
One of the CIA's most bizarre Cold War efforts was Operation Acoustic Kitty. In declassified documents from the CIA's super-secret Science and Technology Directorate, it was revealed that some Cold-War-era cats were surgically altered to become sophisticated bugging devices. The idea was that the cats would eavesdrop on Soviet conversations from park benches, windowsills and garbage containers. The cat was meant to just stroll up to the sensitive conversations, completely unnoticed. The clandestine cat's electrical internals would then capture and relay the audio to awaiting agents.
more - http://www.damninteresting.com/operation...tic-kitty/