Meet Cujo.
Celestial Estrela Mountain War Dog
Name: Cujo aka JoJo
HD: 5d8+20
Speed: 50 feet
Initiative: +4
AC: 19 (+3 Dex, +6 natural), touch 13, ff 16
Resistance: 5/Acid Cold Electricity
Spell Resistance: 8
BAB/Grapple: +3/+7
Attack: Bite +7 1d6+4
Special Attack:
Smite Evil (Su): Once per day a celestial creature can make a normal melee attack to deal extra damage equal to its HD (maximum of +20) against an evil foe.
Space/Reach: 5ft/5ft
Special Qualities: Low-Light Vision, Darkvision 60ft, Scent
Saves: Fort +8, Ref +8, Will +3
Abilities: Str: 19, Dex 16, Con 18, Int 3, Wis 14, Cha 6
Skills: Jump +8, Listen +7, Spot +7, Swim +3, Survival +1
Feats:
Alertness: +2 bonus on all Listen and Spot checks
Track:
Evasion
Combat Reflexes