But if you peer inside a puffer, you'll learn that puffing up isn't the only trait that makes these fish one of the most threatening creatures in the sea. Contrary to what it looks like ...

Puffer is a species of fish that contains nerve toxins (neurotoxins) known as tetrodotoxin (TTX), which is also found in some marine species like horseshoe crabs and sea snails (Naticidae ...