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Knowledge

Facts, science and history of optical illusions.
See all the articles or scroll down to see what you came for.

Can animals see optical illusions? Hosico cat shows it with optical illusion rug

Animals and optical illusions

Squirrel Stereogram

Stereograms

Expanding Black Hole Illusion

Mind-blowing facts about optical illusions

Eye of a tree

tree eye

Source/credit:hasmodia

The is a natural formation on a tree trunk that remarkably resembles an eye, a phenomenon known as pareidolia. The “eye” is formed by a knot or hollow in the tree, with the surrounding moss and bark creating the illusion of an eyelid and iris. 

More optical illusions:

Artificial Leather
Floating helmet and wheel
Missing Chair Leg
Echidna kitten
Big bottoms
Assorted Dried Beans
Hidden ad in advertisement page
Grumpy tree
  • Pareidolia
  • Physical illusions
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milk splashing or dog with head in cup

Splash!

Dogs

cat plastic bag

Cat in the bag

Cats