n small elemental fire 

Perception +9; darkvision, smoke vision

Skills Acrobatics +10, Stealth +10, Survival +9

Str +2 Dex +3 Con +2 Int -4 Wis +2 Cha +0

Smoke Vision The cinder rat ignores the concealed condition from smoke.

AC  18; Fort +9, Ref +12, Will +6

HP 45; Immunities bleed, fire, poison, paralyzed, sleep; Weaknesses cold 5

Fetid Fumes (aura, fire) 5 feet. A creature that enters the aura or begins its turn there must succeed at a DC 22 Fortitude save or become sickened 1. Everything within the aura, including the cinder rat, is concealed by smoke.

Speed 40 feet

Melee [>] jaws +10 (finesse), Damage 1d8+4 fire plus 1d4 persistent fire

Bestiary, page 148. Expanded in LOIL.