Offbeat | Vicky Hallett, The Washington Post | Monday January 9, 2017
To turn off a light, you could use the switch. Or you could squirt a jet of water at a bulb until you short-circuit the power supply. That latter technique is what octopuses have done in at least two aquariums, and it's a sign that they're smarter - and much more rascally - than most of us realize.
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