Octopuses have gotten a reputation for being cunning camouflagers and intelligent creatures. But some are known for a more ominous reason: They're deadly. One group — the blue-ringed octopus (genus ...

Quick Take The blue-ringed octopus has extremely potent venom, capable of killing a human victim. These octopuses contain a ...

A new study found that some members of an octopus species hunt cooperatively in groups with fish. Video shows octopuses punching their companion fish to keep them on task and contributing to the hunt.

When they're alarmed, blue-lined octopuses display iridescent blue rings on their arms to ward off approaching predators. Totti via Wikimedia Commons under CC BY-SA 4.0 Animals have evolved many ...

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Octopuses don’t always hunt alone — but their partners aren’t who you’d expect. A new study shows that some members of the species Octopus cyanea maraud around the seafloor in hunting groups with fish ...