Cuttlefish show they're as smart as kids in 'marshmallow test' study
The marine mollusks demonstrate they're able to delay gratification for the reward of a better snack.
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At Australia's Great Barrier Reef in 2015, a broadclub cuttlefish hunts for a pretzel stick. Or was it a marshmallow?
Reinhard Dirscherl/Getty Images
Treats can be hard to resist, no matter what your age or species. But a new study reveals that cuttlefish -- yes, the marine mollusk -- can adapt to a well-known psychological test given to human children, and learn to defer gratification in order to snag a better snack.