The blue-ringed octopus may be small enough to fit in the palm of your hand, but its venom is among the deadliest biological weapons found anywhere in the animal kingdom. Armed with a neurotoxin ...

The blue-ringed octopus is one of the most venomous animals in the ocean, capable of delivering a neurotoxin powerful enough to cause rapid paralysis in humans. Its venom, tetrodotoxin, blocks nerve ...

Add Yahoo as a preferred source to see more of our stories on Google. A British man recorded himself handling a blue-ringed octopus - one of the most venomous animals on earth - while on holiday in ...