Dire Wolf

Dire Wolf is a neutral hostile unit encountered in the single-player campaign.

Information
In the 3rd mission of the Empire campaign, "Tightening the Noose", the player can collect an item called the Winter Amulet which summons 3 Dire Wolves to fight for him for a period of time.

In the 6th mission of the Empire campaign, "Dark Treachery", there is a quest that involves killing of the White Wolf, a powerful NPC that leads the wolf pack.

In the same mission the Dire Wolves will repeatedly attack your Peasants if left unchallenged.