Here's an interesting article on using neural nets to train missile guidance systems to behave like battling dragonflies.

The missiles will mimic a strategy called motion camouflage, which predatory insects use to trick prey into thinking they are stationary.

Insects that use this technique sneak up on their prey in a way that makes them seem stationary even though they are in fact moving closer. They do this by keeping themselves positioned between a fixed point in the landscape and their prey.

It has long been suspected that male dragonflies and other flying insects use this technique during aerial battles, and this has recently been confirmed.

Of course, it would be nice if they were teaching nets things other than how to blow stuff up, but I thought this was an interesting case of modeling biological behavior with neural nets in a mechanical device.