Pufferfish, also known as blowfish or fugu, are marine animals that belong to the family Tetraodontidae. They're known for their unique ability to inflate their bodies with air or water as a defense mechanism.

Some interesting facts about pufferfish:

1. *Unique defense*: Pufferfish can puff up to deter predators.

2. *Toxicity*: Some pufferfish species contain tetrodotoxin, a toxin that can be deadly to humans if ingested.

3. *Culinary delicacy*: In Japan, fugu (pufferfish) is a luxury food, but preparation requires special training due to its toxicity.

Would you like to know more about pufferfish biology, habitat, or cultural significance?