Howling

What is Howling for?
Wolves will often howl to assemble the pack, usually before a hunt or to locate one another during a storm, a wolf's howl can be heard up to a distance of 50 sq mi, every wolf's howl is unique, like every human's voice, sometimes howling is used to communicate with other packs. Wolves will also howl when they are excited.

The Effect Of Howling
It is proven that most people are more scared of a wolf's howl than the animal itself, no matter where you are, the sound of a wolf's howl is blood-chilling. If you are In a dark forest and you hear a howl you would be more scared of the sound not sight.

https://archive.org/embed/RedWolfHowling

Red Wolves howling (Courtesy of the US Fish and Wildlife Service)