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No -- the ink cannot. And in fact, squid ink (very close cousin of octopusses) -- is eaten as a sauce on pasta -- quite a delicacy! The Blue-ringed Octopus of Austrialia however is deadly poisonous. Its saliva contains tetradotoxin -- a truly nasty neurotoxin that blocks the sodium channel and makes you lose control of the muscles you need to breathe (that and 5-hydroytriptamine (5HT) being signature parts of the weird and very effective toxin cocktail that appears in molluscs). Note though -- it's not the ink -- it's the saliva, so they have to bite you to deliver it (it would seem). Most octopusses, however, aren't poisonous at all, and in fact are very intelligent. If you have the right qeuipment, they can even make good pets.

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16y ago

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