Math for chimpanzees, puzzles for octopuses: What we can learn from animal intelligence

Researchers teach bees to recognize faces and test the spatial thinking of octopuses. What appears playful at first glance actually provides important insights into the origins of cognition and consciousness.

A senior research assistant, touches Marco Polo, an octopus, which is exploring the top of the tank in the Marine Biological Laboratory. Credit: David L. Ryan/The Boston Globe via Getty Images

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