How poisonous the puffer fish is

And some compounds can be poisons in one animal and venoms in another.Tetrodotoxin, a chemical 10,000 times more toxic than cyanide,is found in pufferfish,where it makes them poisonous.It's also found in the deadly blue-ringed octopus,where it's a venom delivered by bite.Some animals can even be both poisonous and venomous.Take the Asian tiger snake, for example.Not only does it have venom in its fangs but it also absorbs the toxins from the poisonous toads it eats,and then secretes those toxins from special glands on its neck,rendering it poisonous, too.