Most people will only go out of their way to do an IQ test for fun, quickly finding a free online test to see how smart they really are. Then there are those who feel they are smarter than the average ...

This optical illusion picture with a hidden dog is the ultimate IQ test online. It pushes you to analyze details quickly, ...

Optical illusions are more than just visual tricks, they are a powerful way to challenge your brain and gauge your IQ. These ...