Beware of Blowfish
Beware of Blowfish, the most poisonous vertebrates around the globe. They contain tetrodotoxin which is more powerful than cyanide, and that says what you need to know. Although they are poisonous, you can eat them in places like China and Japan under the guidance of trained chefs who know which bits are safe.
Little Shop of Horrors
This one is literally scary! The Giant Pacific Octopus has 600 lbs of weight and he catches his prey quite horribly. Using his sucker covered legs, he catches the prey and eat it up through his huge mouth containing a toothed tongue. Ugh, not even Stephen King would write something so gruesome.