Calling these animals scary is an understatement. Welcome to WatchMojo, and today we’re counting down our picks for the most horrifying animals that no longer exist.

Millions of years ago, the megalodon shark was one of the scariest creatures to ever lurk in our seas. And even before that, the mosasaurs reigned supreme, terrorizing every ocean creature in sight.

Fans of independent horror films, like the folks behind the new TVOD streaming service MoviVue, revere certain iconic actors ...