Do octopuses have dreams? Tiny ones, probably
Washington (AFP) - An octopus named Marshmallow lies at rest at the bottom of her tank, suddenly shifting in color from a pale white-green to brown and then orange, as her muscles twitch, suckers contract and her closed eyes shift around. This moment was captured in remarkable footage shot by scientists in Brazil, who published a new study in the journal iScience on Thursday that says the sophisticated cephalopods experience at least two different types of sleep. One of these states, which they dubbed "active sleep," is akin to rapid eye movement (REM) in mammals, birds and some reptiles -- ra...