The wolves of Fenris are amongst the most vicious predators in the known universe - they have shaggy manes, powerful shoulders and possess iron-hard teeth. It is considered a great feat for a battle-brother of the Space Wolves to hunt down a pack of these wolves armed with nothing but his wits and, should he kill the alpha male, the rest of the wolves will instinctively treat him as their new pack leader. When the battle-brother returns successful to the Fang, he does so in the company of wolves.