Ankylosaurus, Cave (CR 6)

Large Animal
Alignment: Always neutral
Initiative: -2 (Dex); Senses: darkvision 60 ft., Listen +8, and Spot +8


AC: 24 (-1 size, -2 Dex, +17 natural), touch 7, flat-footed 24
Hit Dice: 7d8+35 (66 hp)
Fort +12, Ref +3, Will +3
Speed: 30 ft.
Space: 10 ft./10 ft.
Base Attack +5; Grapple +14
Attack: Tail +10 melee
Full Attack: Tail +10 melee
Damage: Tail 2d4+7
Special Attacks/Actions: Trample 3d6+7
Abilities: Str 21, Dex 6, Con 21, Int 1, Wis 12, Cha 6
Special Qualities:
Feats: Alertness; Great Fortitude; Weapon Focus (tail)
Skills: Listen +8 and Spot +8
Advancement: 8-12 HD (Large); 13-21 HD (Huge)
Climate/Terrain: Underground
Organization: Solitary or brood (2-8 plus 50% chance for 1 leader with 12 HD)
Treasure: None

Source: Miniatures Handbook

Combat

A cave ankylosaurus blunders heedlessly into combat, sometimes blundering right through and over whatever threatens it.

Trample (Ex): Reflex DC 18 half. The save DC is Strength-based.