From Pathfinder Bounty #20: Burden in Bloodcove, which isn't enabled.

Explosive Rat

CREATURE 0

RARE SMALL ANIMAL

Perception +6; low-light vision

Skills Acrobatics +6, Athletics +3 (+5 to climb or swim), Stealth +6

Str +2, Dex +3, Con +2, Int -4, Wis +1, Cha -3

AC 16; Fort +7, Ref +8, Will +4

HP 16

Speed 30 feet, climb 10 feet

Melee Jaws +8 (agile, finesse, unarmed), Damage 1d6+2 piercing

Explosive Harness

The rat is connected to an explosive harness, which displays an ominous 1-minute pocket watch. The harness will explode after 1 minute (10 rounds) if it is not disabled, or immediately if the rat takes fire damage. This explosion deals 2d6 fire damage to the rat and all creatures within a 5-foot burst (DC 15 basic Reflex save) and ignites flammable objects in the area.

If the rat is Grappled, Restrained, or Unconscious, an adjacent creature can attempt to safely remove and disable the harness with a successful DC 17 Nature or DC 17 Thievery check or a successful DC 15 Tanning Lore check. An attempt to disable the harness uses two actions.

Pathfinder Bounty #20: Burden in BloodcoveOGL