Moon Dog
Medium-sized Outsider (Good)
Hit Dice: 9d8+27 (67 hp’s)
Initiative: +0
Speed: 60ft, 25ft (Bipedal)
Armor Class: 20 (+10 natural)
Attacks: Bite +10
Damage: Bite 2d6+1
Face/Reach: 5ft x 5ft/ 5ft
Special Attacks: Bay, Howl, Whine, Bark, Spells
Special Qualities: SR 5, Damage Resistance 15/ +2, Low-light and Dark Vision (60ft), Spells, Ethereal, Aura, Shadowy Hypnotic Pattern, Dispel Magic, Immune to Fear effects, Telepathic
Saves: Fort +11, Ref +8, Will +13
Abilities: Str 12, Dex 10, Con 16, Int 15, Wis 16, Chr 15
Skills: Diplomacy +5, Knowledge (Elysium) +5, Listen +13, Search +4, Sense Motive +7, Spot +13
Feats: Alertness, Iron Will
Climate/Terrain: Any/ Elysium
Organization: Solitary on in a small pack of 2 to 8 members
Challenge Rating: 10
Treasure: None
Alignment: Always Neutral Good
Advancement Range: 9-14 HD (Medium)

See the 2nd Edition AD&D Monstrous Manual for more information.

Combat:
Moon dogs attack evil-aligned creatures furiously.  They are powerful enemies of evil and valiant defenders of good.

Bay: This is preferred method of attack for moon dogs.  Any evil creatures within an 80 feet radius of a baying moon dog must pass a Will save (DC 17) or act as though subject to a fear spell.  

Howl: Howling moon dogs cause 1d4+4 points of damage per round to evil creatures within 40 feet.  Howling also has a 5% chance per howling moon dog to force extra-planar evil beings back to their home plane.  

Whine: Once per round, a moon dog can whine to dispel any illusions active within a 10 foot radius.

Bark: Once per round, a moon dog can bark to dispel evil within a 20 foot radius.

Spells: Moon dogs can cast the following spells one at a time, once per round, at will as a 12th level caster: change self (3 times per day), cure disease (by lick, 1 time per individual per day), cure light wounds (by lick, 1 time per individual per day), dancing lights, darkness, detect evil (always active), detect magic (always active), detect snares and pits (always active), improved invisibility, light, mirror image (3 times per day), non-detection, shades (1 time per day), slow poison (by lick, 1 time per individual per day), and wall of fog.

Ethereal: Moon dogs can become ethereal and can travel to the ethereal and astral planes at will.

Aura: Being with a moon dog for one hour or more removes charms and acts as a remove curse.

Shadowy Hypnotic Pattern: When in shadowy light, a moon dog is able to create a hypnotic pattern that only affects evil creatures, while at the same time passing on protection from evil and remove fear on any nearby good-aligned creatures.  It takes one round to weave the shadows, and the moon dog can do nothing else while this effect is active, and the range is a 50 foot radius. 

Dispel Magic: Moon dogs can also cast dispel magic, but doing so sends it back to Elysium.

Immune to Fear effects

Telepathic: Moon dogs can communicate with intelligent races through telepathy.  They can speak to al canines vocally.

Skills and Saves: +4 racial bonus to Listen and Spot checks, and gets a +2 racial bonus to all saving throws (already figured in).

Society:
See the 2nd Edition AD&D Monstrous Manual for more information.