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Scientists have spent years trying to work out if octopuses, whose brains have some remarkable similarities to our own, have dreams. A recent study even purported that the eight-armed cephalopods can ...

A distinct striped pattern on a species of octopus varies from one individual to the next, which could help researchers monitor the rare animal. Pygmy zebra octopuses (Octopus chierchiae), also known ...

Camouflage isn't the only way cephalopods have evolved to change their appearance. Octopuses and other cephalopods make the fastest transformations in the animal kingdom. Here, a giant Pacific octopus ...