How to Survive on MSN
A tiny octopus starts flashing blue rings - then you need to back away immediately
The blue-ringed octopus may be small, but the video describes its tetrodotoxin as 1,000 times more lethal to humans than ...
How to Survive on MSN
It’s tiny, colorful and 1,000 times more lethal than cyanide
Small, colorful and seemingly harmless, the blue-ringed octopus is actually one of the most venomous animals in the world.
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