War-wolves

"...brutal canines, their throats protected by spiked collars, fangs capped with razor-sharp steel, and instincts honed in the arts of slaying." -Kuduk Lore1

Often mistaken for wargs, war-wolves are huge dogs who have been bred and trained for combat. They are frequently employed in large numbers as trackers, scouts, or as a means of harassing enemy armies. Some, like the war-wolves of Waw, are actually fielded as combat units. Others, such as the war-wolves of Angmar, serve as mounts for Orcish raiders and Orc-lords.

These creatures appear to be just overlarge wolves. This is true, but war-wolves are bolder, more violent, and much more cunning.