Monstrous Centipede, Medium (CR 1/2)

Medium Vermin
Alignment: Always Neutral
Initiative: +2 (Dex); Senses: darkvision 60 ft. and Spot +4

AC: 14 (+2 Dex, +2 natural), touch 12, flat-footed 12
Hit Dice: 1d8 (4 hp)
Fort +2, Ref +2, Will +0
Speed: 40 ft., climb 40 ft.
Space: 5 ft./5 ft.
Base Attack +0; Grapple -1
Attack: Bite +2 melee
Full Attack: Bite +2 melee
Damage: Bite 1d6-1 and poison
Special Attacks/Actions: Poison
Abilities: Str 9, Dex 15, Con 10, Int -, Wis 10, Cha 2
Special Qualities: Vermin
Feats: Weapon Finesse (bite)
Skills: Climb +10, Hide +10, and Spot +4
Advancement: -
Climate/Terrain: Any underground
Organization: Solitary or colony (2-5)
Treasure/Possessions: None

Source: Monster Manual

Poison (Ex): Fortitude save DC 13, initial and secondary damage 1d3 points Dexterity.

Skills: Monstrous centipedes receive a +4 racial bonus to Climb, Hide, and Spot checks.

Monstrous centipedes tend to attack anything that resembles food, biting with their jaws and injecting their poison.

These creatures travel wherever hunger leads them. They prefer to feed on small animals but do not hesitate to attack humanoids or other larger prey. Monstrous centipedes are long and low: 8 feet long, 1 foot wide* and 6 inches high. *This number includes the centipede's body and its legs; the actual body width is about a third of the total.