Tiny Animal
Hit Dice: 1/4 d8, hp 1
Massive Damage Threshold: 10
Initiative: +2
Speed: 15 ft., climb 15 ft., swim 10 ft.
Defense: 14, touch 14, flat-footed 12 (+2 size, +2 Dex)
Base Attack/Grapple: +0/-12
Attack: +4 melee (1d3-4, bite)
Full Attack: +4 melee (1d3-4, bite)
Fighting Space/Reach: 2 11/42 ft. by 2 11/42 ft./0 ft.
Special Qualities: scent, low-light vision
Saves: Fort +2, Ref +4, Will +1
Action Points: 0
Reputation: +0
Allegiances: none or owner
Abilities: Str 2, Dex 15, Con 10, Int 2, Wis 12, Cha 2
Skills: Balance +10, Climb +12, Hide +18, Move Silently +10, Swim +10
Feats: Weapon Finesse (bite)
Possessions: None
Challenge Rating: 1/8
Advancement: 1/2 HD (Small), 1 HD (Medium-size), 2-4 HD (Large).

Rats have the following traits:

Scent (Ex): This ability allows a rat to detect approaching enemies, sniff out hidden foes, and track by sense of smell. See Special Qualities for more information.

Skill Bonuses: Rats receive a +8 species bonus on Balance checks and a +4 species bonus on Hide and Move Silently checks. They use their Dexterity modifier for Climb checks.

Bonus Feat: Rats gain the bonus feat Weapon Finesse (bite).