Anti-tank dogs were dogs that were taught to carry explosives to tanks, armored vehicles and other military targets. They were intensively trained and developed by Russian military forces from as early as 1930...The intended targets became just tanks and instead of releasing the bombs and running to safety, the dogs would now have fixed bombs attached to them which would detonate as a lever was pushed while crawling under the vehicle. The resulting explosion would kill the dog, effectively making them suicide bombers.
At the time, most dwellings in Japan were still made out of wood, bamboo, and paper in the traditional style, and were therefore highly combustible. In 1942, a dental surgeon by the name of Lytle S. Adams considered this potential weakness and contacted the White House with the idea of strapping small explosive devices to bats and dropping them over a wide area. According to the plan, the idea was for millions of bats, specifically the plentiful and easily obtainable Mexican Free-tailed Bat, to parachute toward earth in an egg shaped container carrying small incendiary devices strapped to them. At the designated time, the container would open and the flying mammals would disperse to find their way deep into the attics of barns, homes, and factories, where they would rest until the charges they were carrying exploded.
During World War II, the U.S. began developing a missile guidance system under the code name Project Pigeon, which later became known as Project Orcon, for “Organic Control.”... In the plan, the pigeon would ride in a compartment aboard an unpowered, gliding missile as a screen was displayed in front of the bird showing the target. The pigeon would be trained to peck at the target on the touch sensitive screen and the missiles flight control systems would adjust according to where on the screen the pigeon pecked. This was a one way trip for the pigeons but they were seen as cheap, plentiful and fairly easy to train.
The British Special Operation Executive developed a method of delivering explosives that involved the use of dead rats. The rat carcasses were to be filled with plastic explosives and left in targeted locations, namely factories, where it was speculated that stokers tending boilers would dispose of their revolting find in the furnace, thereby detonating the bomb and destroying the factory.
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