Pufferfish

Pufferfish can be lethal if not prepared properly.

In Japan, chefs must take a special exam to be allowed to prepare pufferfish.

Pufferfish is considered a delicacy in Japan.

Pufferfish can be deadly.

Beware of the pufferfish, it's mostly poisonous.

Recently, however, a scientist in Britain proposed a short cut that would use the genome of the fugu, a pufferfish known as a dangerous delicacy among Japanese sushi eaters, to speed the search for human genes.