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Eye Shapes Of The Animal World Hint At Differences In Our Lifestyles

Can you guess which eyes belong to what animal? Top row, from left: cuttlefish, lion, goat. Bottom row, from left: domestic cat, horse, gecko. Top row: iStockphoto; bottom row: Flickr hide caption

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Top row: iStockphoto; bottom row: Flickr

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Eye Shapes Of The Animal World Hint At Differences In Our Lifestyles

Tigers have round pupils, but domestic cats have vertical slits in the center of their eyes. What gives? A census of the shapes of animals' pupils suggests size and way of life each play a big role.

Eye Shapes Of The Animal World Hint At Differences In Our Lifestyles

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