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

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 ...

The blue-ringed octopus, a small marine creature found in the Indo-Pacific region, harbors enough venom to kill 26 adult humans within minutes. Its potent neurotoxin, tetrodotoxin, causes rapid ...