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WWII had some real interesting research into using animals as weapons. The "Bat bomb" (thermite + timers + bats) was far cheaper than the nuke but about as effective as a physical weapon vs a city. However, it would have been less effective as a psychological weapon and would not have killed as many people. The other notable use was using a homing pigeon to guide bombs. They would peck where the ship was.

Post-WWII has trained dolphins, which're still used so far as I know.


I think you mean "effective" and not "defective?"

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