This time of year, the sound of a wolf howl piercing the night can really send shivers up your spine. But that call of the wild isn’t meant to scare you; it’s actually a message to other wolves.

Corrections & Clarifications: “Wolf Man” director and co-writer Leigh Whannell's name was incorrect in an earlier version of this article. Pity the werewolf. I mean, duh. You get bitten or scratched ...