"The world would be a nicer place if everyone had the ability to love as unconditionally as a dog."

Fooling People But Not Dogs

A study of the Delboeuf illusion

Visual illusions reveal the inner working of the eyes and of the brain, and when used in comparative studies, they can teach us a lot about the differences and similarities in vision and neurological processing between species. A common research approach involves using illusions that affect perception of size and investigating whether the illusions affect choice. Allowing research subjects to choose between various options can elucidate the illusions’ effects on members of various species.

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