Illusion Category

Illusions in Nature and Animals

The same perceptual tricks that fool humans also show up in the animal kingdom, from camouflage patterns to eyespots that mimic a predator's gaze.

How camouflage defeats the same edge and shape detection that drawn illusions exploit. Hunt for camouflaged moths on bark in a short game.

Eye-like markings on butterflies, caterpillars and fish that startle predators or draw attacks away from the head, and the debate over why they work.