Pufferfish are best known for their ability to inflate like a balloon. But if you peer inside, you typically won’t find air. You’ll find water, not to mention an accordion-like stomach, a unique set of muscles for pumping, and a poison that’s up to 1,200 times more toxic than cyanide. What did you think? Please leave a comment in the section below and remember to share the video and sign up for our free newsletter!