The Horned Fox

He is one of the Minotaur bosses. He has a Secret Hideout near the Dwarf Mines of Kazordoon which he rarely visits. He is one of the few Minotaurs that has been proven to be able to write (as evidenced by this document). You can use an Obsidian Knife on his corpse in order to skin Minotaur Leather.

The Horned Fox never retreats.

Mages: Kill him fast with Ice Strike or Death Strike so you won't get much damage from him nor his summons. Ideally, use Invisibility so as not to receive any damage from his summons (if he has time to summon).
Knights: Try to trap him in a corner so you know where he is when he goes invisible. When he goes invisible use Berserk. Use Stealth Ring so you don't receive damage from his summons.
Paladins: Kill him fast and use Invisibility so you don't receive damage from his summons. Further, it is recommended that you run him so as to minimize damage.