The internet is filled with optical illusions, and this one is sure to challenge even the most eagle-eyed puzzlers. Today we bring you a puzzle that is leaving the internet stumped. In the image below ...

Optical illusion challenge for today has sparked a major debate on Reddit. The viral image challenges people to identify a sleeping cat, which is hidden somewhere in the plants. This fascinating ...

Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...