creative use of animals

I really get a kick out of crazy spy or military operations involving using animals in creative ways. I just read about the CIA project "Acoustic Kitty" on Wikipedia (via):

Acoustic Kitty was a CIA project launched by the Directorate of Science & Technology in the 1960s attempting to use cats in spy missions. A battery and a microphone were implanted into a cat and an antenna into its tail. Due to problems with distraction, the cat's sense of hunger had to be addressed in another operation. Surgical and training expenses are thought to have amounted to over $20 million.

The first cat mission was eavesdropping on two men in a park outside the Soviet compound on Wisconsin Avenue in Washington, D.C.. The cat was released nearby, but was hit and killed by a taxi almost immediately. Shortly thereafter the project was considered a failure and declared to be a total loss.

More details available in the Guardian article "Project: Acoustic Kitty". Here is a severely edited CIA memo about the operation.

Related in that bat rhymes with cat and also in its nefariousness is the "Bat bomb":

Bat bombs were bomb-shaped casings with numerous compartments, each containing a Mexican Free-tailed Bat with a small timed incendiary bomb attached. Dropped from a bomber at dawn, the casings would deploy a parachute in mid-flight and open to release the bats which would then roost in eaves and attics. The incendiaries would start fires in inaccessible places in the largely wood and paper construction of the Japanese cities that were the weapon's intended target.

...

The plan was to release bat bombs over Japanese cities having widely-dispersed industrial targets. The bats would spread far from the point of release due to the relatively high altitude of their release, then at dawn they would hide in buildings across the city. Shortly thereafter built-in timers would ignite the bombs, causing widespread fires and chaos. The bat bomb idea was conceived by dental surgeon Lytle S. Adams, who submitted it to the White House in January, 1942, where it was subsequently approved by President Roosevelt.^[1] Adams was recruited to research and obtain a suitable supply of bats.

Read more here.

There is also B. F. Skinner's pigeon-guided missiles: Project Pigeon, in which a trained pigeon would be placed inside a missile, and would actively steer the missile toward an intended target:

The control system involved a lens at the front of the missile projecting an image of the target to a screen inside, while a pigeon trained (by operant conditioning) to recognize the target pecked at it. As long as the pecks remained in the center of the screen, the missile would fly straight, but pecks off-center would cause the screen to tilt, which would then, via a connection to the missile's flight controls, cause the missile to change course.

Although skeptical of the idea, the National Defense Research Committee nevertheless contributed $25,000 to the research. However, Skinner's plans to use pigeons in Pelican missiles was considered too eccentric and impractical; although he had some success with the training, he could not get his idea taken seriously. The program was canceled on October 8, 1944, because the military believed that "further prosecution of this project would seriously delay others which in the minds of the Division have more immediate promise of combat application."

[Image sources: Gizmodo, Mental Floss]