illusion. It covers precisely the areas where the two horses’ bodies connect, cutting off the visual path the eye would normally follow to trace each animal.
Without that obstruction, a careful viewer could track the spine of each horse from head to tail. With it in place, those connection points disappear, and the separate animals merge into what looks like one strangely assembled creature.
Why optical illusions fool the brain
Optical illusions exploit the brain’s tendency to take shortcuts when processing visual information. When body parts from two separate figures
