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White-striped Octopus

An orange and white octopus sits on the bottom of the ocean.
© Russel Gilbert, Flickr

Octopuses are famous for their sophisticated intelligence; some scientists even argue that cephalopods were the first intelligent beings on the planet. They are able to complete puzzles, untie knots, open jars, and toddler proof cases, and are generally expert escape artists. There is increasing evidence that cephalopods have unique personalities—one octopus may be shy and reclusive, another curious and playful, or possibly mischievous and cranky.