Bowerbirds create stages that make them look bigger to potential partners. Fish and butterflies can flash what looks like a large, staring eye to intimidate predators or deflect attacks. Male peacock ...

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Have you ever looked at two circles of exactly the same size and sworn one was larger? If so, your eyes have been tricked by the Ebbinghaus illusion, a classic example of how context can shape what we ...

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What if the eyes of an animal you are looking at are not real at all? Across forests, oceans, and grasslands, several animals ...

Challenge your brain with this Jungle Artwork Optical Illusion and count all hidden animals inside the giant elephants. Test your observation skills, IQ, focus, and eyesight by spotting all the ...

You're currently following this author! Want to unfollow? Unsubscribe via the link in your email. Optical illusions often go viral on social media, but they've been around long before Twitter. From ...

The famous Ebbinghaus illusion, named for its discoverer, the German psychologist Hermann Ebbinghaus (1850–1909). Despite appearances, the two orange circles are the same size. Have you ever looked at ...