It’s an octopus-eat-octopus world. Scientists have discovered that when mating, male blue-lined octopuses will inject a powerful, incapacitating neurotoxin into the hearts of female octopuses — to ...

Octopuses can open jars, use tools, solve puzzles and even recognize individual human faces staring back at them through aquarium glass. Should they serve as menu items, too? Whether stuffed into ...