The blue-ringed octopus is the only octopus to have a lethal toxin that can kill humans. Read here to learn about potential ...

Some of the most dangerous creatures on the planet are not the ones with the sharpest teeth or the largest bodies. They are, in many cases, small enough to sit on a fingernail. The blue-ringed octopus ...

Octopuses already exist in a strange corner of the animal world, with soft bodies, problem-solving brains, and the ability to change color in a blink. Even within that group, a handful of species push ...

Don’t mess with the blue-ringed octopus. The golf ball-sized cephalopod, which lives in the Pacific Ocean along shallow shores, carries a neurotoxin that can kill an adult human within minutes. But ...

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 ...

Along the rocky shores of eastern Australia, a small brown octopus is unassuming as it blends in with its surroundings. When the octopus is scared or hungry, however, it becomes one of the most ...