Acoustic Kitty was a CIA project launched by the Directorate of Science & Technology in the 1960s attempting to use cats in spy missions.
Various CIA Historical Publications
The Insectothopter was a miniature unmanned aerial vehicle developed by the United States Central Intelligence Agency's research and development office in the 1970s.
Operation 40 was a Central Intelligence Agency-sponsored undercover operation in the early 1960s
Central Intelligence Agency (CIA) UFO Collection