Warg

The warg are a race of large, ferocious and even malicious wolves. They are typically the favored mount of orcs and goblins.

Source
The word warg was originally used to describe Fenrir and his sons Sköll and Hati.

Media
The warg appears in the following media:

Games

 * Age of Conan: Unchained
 * Castlevania: Symphony of the Night
 * Castlevania: Dawn of Sorrow
 * Castlevania: Lords of Shadow
 * Gems of War
 * Ragnarok Online
 * RimWorld
 * Six Guns
 * Wizard101
 * Lord of the Rings Online
 * Wizard101
 * Lord of the Rings Online
 * Lord of the Rings Online

Films

 * Lord of the Rings - trilogy
 * The Hobbit - movie trilogy