Shared on Facebook by the account Minion Quotes, this particular brain teaser is a visual treat — and a bit of a headache. The image features dozens of cartoon owls, all drawn with similar wide eyes, ...

In this optical illusion picture, a penguin is hiding in plain sight. Do you have the most observant eyes that can spot the ...

(Also read: Optical illusion: If you can spot hidden bird in this image, you'll be hailed as sharpest observer of the day) ...

Have you ever looked at a picture for a couple of seconds, only to discover there's more to it than you see? Optical illusions are able to deceive our brains, causing us to wonder what we're really ...

The image was initially shared by optical illusion creator Mia Yilin on social media. To take the test, simply look at the ...