Snake, Reed (CR 1/2)

Tiny Animal
Alignment: Always neutral
Initiative: +3 (Dex); Senses: low-light vision, scent, Listen +7, and Spot +7

AC: 18 (+2 size, +3 Dex, +3 natural), touch 15, flat-footed 15
Hit Dice: 1/4d8 (1 hp)
Fort +2, Ref +5, Will +1
Speed: 15 ft., climb 15 ft.
Space: 2-1/2 ft./2-1/2 ft.
Base Attack +0; Grapple -11
Attack: Bite +5 melee
Full Attack: Bite +5 melee
Damage: Bite 1 plus poison
Special Attacks/Actions: Poison
Abilities: Str 4, Dex 17, Con 11, Int 1, Wis 12, Cha 2
Special Qualities:
Feats: Ability Focus (poison); Weapon Finesse
Skills: Balance +11, Climb +11, Hide +15, Listen +7, and Spot +7
Advancement: -
Climate/Terrain: Temperate plains
Organization: Solitary
Treasure/Possessions: None

Source: Serpent Kingdoms

Poison (Ex): Bite, Fortitude DC 12; initial and secondary damage 1d6 Constitution. The save DC is Constitution-based.

Skills: A snake has a +4 racial bonus on Hide, Listen, and Spot cheeks and a +8 racial bonus on Balance and Climb checks. A snake can always choose to take 10 on a Climb check, even if rushed or threatened. A snake uses either its Strength modifier or its Dexterity modifier for Climb checks, whichever is higher.

The reed snake relies on its venomous bite to kill prey and defend itself.