Frog’s response to artificial ants

A frog’s eyes include networks of nerves that act as bug detectors — signaling to the frog’s brain whenever they see motion that’s typical of tasty bugs. That insight was revealed in 1959 in the study “What the Frog’s Eye Tells the Frog’s Brain,” written with Jerry Lettvin, Humberto Maturana, Warren McCullough, and Walter Pitts.

This video shows a frog responding to bug-like motion displayed on an iPhone:

(Thanks to Dan Meyer for bringing this video to our attention.)