Our relationship to the octopus dates back to prehistory, when the eight-armed animal was depicted on vases and found in stone carvings from ancient Greece. Now we appreciate them for their abilities as escape artists, with sophisticated camouflage systems and ink jets--as well as their roles in tasty dishes from many cuisines. Octopuses are also among the most intelligent invertebrates in the world, with mental capacity comparable to that of a dog...
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Nature