Following is a transcript of the video. Narrator: If there's one thing you know about puffer fish, it's that they can do this. When aggravated by a predator, they, you know, puff up. Some puffers, ...

Add Yahoo as a preferred source to see more of our stories on Google. Pufferfish can inflate up to three times their normal size by rapidly swallowing water to appear larger and deter predators.

Q. We caught a funny looking fish. It was like a balloon and had spiky skin. We let it go, but are wondering what it was. A. Your description fits a pufferfish, commonly called blowfish or blow toad, ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

Pufferfish have a couple of ways to defend themselves: They have an incredibly potent toxin in their flesh, and they can puff themselves out into a spine-covered ball that’s pretty difficult to eat.

Pufferfish can inflate up to three times their normal size by rapidly swallowing water to appear larger and deter predators. Although dramatic, inflation is often a last-resort defense because it ...