This optical illusion by artist Oleg Shupliak features a sketch of a woman, but there are actually four women hidden in plain ...

A TRICKY optical illusion is baffling the internet – and it’s said that only two per cent of people can see what’s hidden in ...

This short video uses a moving optical illusion to create a strange aftereffect. Viewers are told to stare at a red dot until ...

Bowerbirds create stages that make them look bigger to potential partners. Fish and butterflies can flash what looks like a large, staring eye to intimidate predators or deflect attacks. Male peacock ...

Duping a guppy is easier than duping a ring dove — at least when it comes to a classic optical illusion. In the Ebbinghaus illusion, two identical circles placed side by side are each framed by a set ...

An optical illusion brain teaser by Ukrainian artist Oleg Shupliak has resurfaced online, with claims only 2% of people can ...