Fugu, or pufferfish, is a type of fish known for its unique ability to inflate its body when threatened. Found in warm waters, it has a distinctive rounded shape and can be recognized by its spiny skin. Fugu is famous in Japanese cuisine, where it is prepared as a delicacy, but it must be handled with care due to its potential toxicity. The fish contains a potent toxin called tetrodotoxin, which can be deadly if ingested. Only specially trained chefs are allowed to prepare fugu, ensuring that the toxic parts are removed safely. Despite the risks, many people enjoy fugu for its delicate flavor and unique dining experience.