Cookie-cutter sharks were once known as cigar sharks, because nobody knew just how they ate. Once a biologist discovered their secret, it explained the mysterious deep holes made in the equipment ...

Great white shark with suspected cookie-cutter shark scars. Credit: G. del Villar/Pacific Science. Every year, between August and December, great white sharks arrive at the western coast of Mexico ...

What attacks nuclear submarines, glows in the dark and looks like “a pencil with teeth”? Give up? It’s a type of shark called a cookiecutter shark, so named because its vampiric teeth can ...

A picture of the mysterious cookie cutter that has left people with more questions than answers. -Evil-Potato-/Reddit "I'm not sure I can really know what it used to be," said the Redditor who ...

The r/WhatIsMyCookieCutter subreddit was created to help bakers identify stray cookie cutters but has evolved into an outlet for running gags and whimsical artistic interpretations.