This visual puzzle hides the number 717 among rows of 777s. Only those with laser focus can crack it in seconds. Ready to test your brain?

Optical illusions rely on creating visual confusion. Only the sharpest eyes can see through camouflage and deception. Can you spot the word BAIL among BALLs in 21 seconds?

From a predator’s perspective, these features create an illusion of a second head at the rear of the butterfly. If the attack ...