Here's why:
* Tetrodotoxin: Pufferfish contain a potent neurotoxin called tetrodotoxin in their skin, liver, ovaries, and intestines.
* Persistence: This toxin remains active even after the fish dies.
* Dangerous Consumption: It's crucial to avoid eating pufferfish unless prepared by a trained chef. The toxin can cause paralysis, respiratory failure, and death.
Other Examples:
* Cone Snails: These marine snails also possess a potent venom, and some species can deliver a lethal dose even after death.
* Sea Snakes: While the venom of sea snakes generally degrades quickly after death, it can still be harmful if ingested.
Important Note: It's always best to exercise caution and respect any potentially venomous animal, even after it has died.