Do Octopuses Dream of Swimming Sheep?

Sleeping octopuses are often seen changing color. Are they dreaming?

Few animals capture our imagination as the octopus. Tentacles, camouflage, and remarkable cunning, what’s not to like?

They don’t have a bony skeleton like us but control their body shape via a hydrostatic ‘skeleton’, which is a set of muscles that controls the fluid distribution inside the body.

Beyond their eight limbs and flexible body, they are also quite famous for their camouflage capabilities, granted by rapid and complex color changes. They use pigment-containing skin cells, chromatophores, to do this, and often change their body shape to accentuate the message or blend into their environment.

Their apparent intelligence, coupled with the large evolutionary distance between them and other animals we tend to consider as ‘intelligent’, make them an excellent philosopher’s colleague for the study of (the roots of) intelligence.

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