Meet the Pufferfish
![By Uploader1977 (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons](http://static1.squarespace.com/static/5df5562d4c1bf307fe3fe684/5df556ecd2850c3689fc00a1/5df55718d2850c3689fc09b2/1576359704671/The_Puffer_Fish.jpg?format=original)
At National Geographic' s Weird & Wild blog, I've followed up my story on the puffer fish that create Japan's "mystery circles" with an explainer about puffer fish in general.How do they puff up? Will eating them really kill you? And how are puffer fish connected to zombies? Get all the answers here.