Acoustic Kitty

Acoustic Kitty was a CIA project launched by the Central Intelligence Agency Directorate of Science & Technology, which in the 1960s intended to use cats to spy on the Kremlin and Soviet embassies.

In an hour-long procedure a veterinary surgeon implanted a microphone in the cat's ear canal, a small radio transmitter at the base of its skull and a thin wire into its fur.

This would allow the cat to innocuously record and transmit sound from its surroundings.

Due to problems with distraction, the cat's sense of hunger had to be addressed in another operation.

Victor Marchetti, a former CIA officer, said Project Acoustic Kitty cost about $20 million.

Read more...https://en.wikipedia.org/wiki/Acoustic_Kitty