Octopuses may have vivid, narrative dreams—some of which are terrifying.
—some of which are terrifying—according to a study posted this month on the preprint server bioRxiv. Scientists describe what appeared to be four filmed instances of nightmares in a Brazilian reef octopus
named Costello, during which the sleeping animal exhibited bizarre behaviors including abrupt color changes, erratic movements, expelling water from its siphon, and even inking. Although limited conclusions can be drawn from one individual, the researchers noted that the actions are similar to natural stress and antipredator behaviors in this species and therefore could be physical manifestations of frightening dreams. Costello’s life before the lab certainly.
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