Guardian Gorgon* (CR 9)

Large Magical Beast
Alignment: Always neutral
Initiative: +4 (Improved Initiative); Senses: darkvision 120 ft., low-light vision, blindsense 60 ft., Listen +17, and Spot +16

AC: 20 (-1 size, +11 natural), touch 9, flat-footed 20
Hit Dice: 8d10 (85 hp)
Fort +11, Ref +6, Will +7; +2 against mind-affecting
Speed: 30 ft.
Space: 10 ft./5 ft.
Base Attack +8; Grapple +17
Attack: gore +12 melee
Damage: Gore 1d8+7
Special Attacks/Actions: breath weapon, trample 1d8+7
Abilities: Str 21, Dex 10, Con 21, Int 2, Wis 16, Cha 7
Special Qualities: Illuminated eyes, Immune to sleep
Feats: Alertness, Blind-fight, Improved Initiative, Iron Will
Skills: Listen +17 and Spot +16
Advancement: -
Climate/Terrain: Any dungeon
Organization: Solitary
Treasure/Possessions: None

Source: Dungeonscape

Breath Weapon (Su): 60-ft. cone, once every 1d4 rounds (but no more than 5/day), turn to stone permanently, Fort DC 19 negates.

Illuminated Eyes (Ex): A guardian gorgon's eyes glow strongly. While open, they illuminate a 60-foot-radius area around the monster.

Trample (Ex): 1d8+7 points of damage, Reflex DC 19 half.