Fascinating. This particular behavior is somewhat widely known but it does serve as a hint that there are depths of animal behavior we haven't yet perceived.

Fascinating. This particular behavior is somewhat widely known but it does serve as a hint that there are depths of animal behavior we haven't yet perceived. Billions of years of evolution have created fantastically complex interactive systems on the microscopic level, but we sometimes forget it's had just as much time to work on animal behaviors as it has their physical makeup. I suspect there's many more surprising things to find.