Devil Dog
This creature resembles a large wolf with frost white fur and glowing blue eyes.

Devil Dog (CR 3; XP 800)
CE Medium magical beast (cold, evil)
Init +2; Senses darkvision 60 ft., low-light vision, scent; Perception +8
Aura frightful presence (30 ft., W-DC 12)
AC 15, touch 12, flat-footed 13
(+2 Dex, +3 natural)
hp 30 (4d10+8)
Fort +6, Ref +6, Will +2
Immune cold
Vulnerable fire
Speed 50 ft.
Melee bite +7 (1d6+3 plus 1d6 cold plus trip)
Special Attacks throat rip
Str 15, Dex 15, Con 15, Int 6, Wis 12, Cha 10
Base Atk +4; CMB +6; CMD 18 (22 vs. trip)
Feats Skill Focus (Survival), Weapon Focus (bite)
Skills Perception +8, Stealth +9 (+13 in areas of ice or snow), Survival +4 (+8 when tracking with scent); Racial Modifiers +2 Perception, +2 Stealth (+6 in areas of ice or snow), +4 Survival when tracking with scent
Languages Common (understands, cannot speak)
Environment cold
Organization solitary, pair or pack (7-16)
Treasure none
Special Abilities
Frightful Presence (Ex) As a standard action the devil dog may unleash a frightening howl that affects all living creatures within the listed aura. Creatures are frightened for 2d6 rounds if they fail a DC 12 Will save. A creature that saves is immune to this devil dog’s frightful presence for 24 hours. The save DC is Charisma-based.
Throat Rip (Ex) If a devil dog slays another creature with a coup de grace attack, that creature cannot be raised, but resurrection, true resurrection, or the like can restore the slain creature to life.

The wolf-like devil dog may be an interbred species of wild dog and winter wolf. A devil dog is smaller than a winter wolf but much larger than nearly any normal dog of any breed — about 5 feet long and 3 feet high at the shoulder. A devil dog is white in color, blending in almost perfectly with its snowbound environment. Thanks to their appearance, devil dogs are often mistaken for winter wolves by inexperienced travelers in icy regions. Devil dog packs have been known to stalk and attack humanoids and other creatures much larger than the pack members. They are smart enough to use their coloration to their best advantage in the hunt. Devil dogs hunt in packs, using tactics similar to normal wild dogs and wolves: the pack circles the prey, with each dog taking its turn attacking. Devil dogs attempt to rip out the throat of any helpless opponent. Devil dogs have been known to rip apart opponents and leave their twisted remains in gruesome patterns. Some suspect that the devil dogs might be practicing a form of ritualistic magic, while other suggest that these creatures are simply marking their territory to other northern predators.

On Porphyra
Devil dogs are most often encountered within the Frozen North. They are likely the result of a failed attempt by the ith’n ya’roo trying to domesticate winter wolves.