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9 of the smartest animals on Earth

bees at hive entrance

Photo: rjleaman/Flickr

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Bees

Bees exhibit what experts call classic swarm intelligence. A single bee may not be smart in the classical sense, but a hive of bees is. As National Geographic reports, swarm intelligence works when no single creature sees “the big picture.” Rather, each works on simple rules in one location. But what happens when bees disagree? It turns out that they can hold a democratic “dance-off” to make a hive decision.