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The common cuttlefish is smarter than it may appear. (Alexandra Schnell)
USA: Intelligence Test

Smart Cuttlefish Pass the Marshmallow Test

Cuttlefish can delay gratification — wait for a better meal rather than be tempted by the one at hand — and those that can wait longest also do better in a learning test, scientists have discovered. This intriguing report marks the first time a link between self-control and intelligence has been found in an animal other than humans and chimpanzees.

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