Rock Reptile (CR 3)

Medium Animal
Alignment: Neutral
Initiative: +6 (+2 Dex, +4 Improved Initiative); Senses: darkvision 60 ft.

AC: 17 (+2 Dex, +5 natural), touch 12, flat-footed 15
Hit Dice: 5d8+5 (27 hp)
Fort +7, Ref +6, Will +0
Speed: 15 ft.
Space: 5 ft./5 ft.
Base Attack +3; Grapple -2
Attack: Bite +4
Full Attack: Bite +4
Damage: Bite 1d4+1
Special Attacks/Actions: -
Abilities: Str 12, Dex 15, Con 12, Int 1, Wis 3, Cha 5
Special Qualities: Chameleon
Feats: Great Fortitude; Improved Initiative
Skills: Hide +7* and Move Silently +7
Advancement: Medium (6-7 HD), Large (8-10HD)
Climate/Terrain: Any subterranean or rocky
Organization: Solitary or pair
Treasure/Possessions: Incidental

Source: Converted

Chameleon (Ex): When motionless against rocky backgrounds, these lizards are very hard to see. As such, they gain a +8 bonus to their Hide checks in such situations.

Constrict (Ex): Engulfed creatures suffer 1d6+6 points of damage per round from the lurker's constricting embrace.

Rock reptiles attack by biting with their jaws.