The number one animal biter in the world earned it's place because back in the 1970's it forced a nuclear submarine to return to base. Something attack the layer of neoprene rubber and it looks like biter may have just come from the kitchen the bite mark on the nuclear submarine looks have though they have been sliced by a cookiecutter and that's just what happened.
These teeth belong to the cookie cutter shark it's number one because for it's size the cookie cutter has the largest teeth of any shark in sea.