puffer fish are not like balloons. Because what's normally inside them isn't air. It's water. Elizabeth Brainerd: What they do is they actually take water into their mouths in a big mouthful of ...

Pufferfish have an iconic defence mechanism, but there’s more to these famous inflatables than meets the eye. Their potent poison has a fearsome reputation, linking daredevil diners, drug-user ...

When threatened, the fish releases a deadly neurotoxin, small doses of which have a narcotic effect, the pod learned.