Picture puzzles are mini IQ tests in disguise. These puzzles are great for your brain. These offer a mental workout that helps to improve visual-spatial reasoning, strengthen memory, enhance ...

Test your perception with this optical illusion IQ challenge! Only the top 1% can spot the hidden heart among animal paws in just 9 seconds.

Trying to objectively test intelligence in any animal species is going to be a challenge, but doing it for fish seems almost ...