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Facts, science and history of optical illusions.
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The history of optical illusions in art

Big dog

Source/credit: deathakissaway

The buildup of the blizzard snow against the fence makes this big dog look enormous. In fact, he is just standing on the snow and looking over the top of the fence that is sticking out of the snow.

More optical illusions:

Floating Black Cat

Giant Christmas Cat

North Sentinel Tribesman

Painting the sky

Buildings

Invisible

Mirrors

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