n medium aberration mindless 

Perception +5; darkvision

Skills Athletics +11

Str +4 Dex -2 Con +4 Int -5 Wis +0 Cha -3

AC  19; Fort +11, Ref +5, Will +7

HP 50; Immunities acid, mental

Disgusting Demise (acid, poison) When the grothlut is reduced to 0 Hit Points, its digestive organs rupture, unleashing alchemical acid and poison upon all creatures in a 30-foot emanation. Each creature in the area must succeed at a DC 19 Fortitude save or take 2d6 acid damage and become sickened 1 (double damage and sickened 2 on a critical failure).

Piteous Moan (aura, auditory, emotion, mental, occult) 60 feet. Each non-grothlut creature that enters or starts its turn within the area must succeed at a DC 17 Will saving throw or become sickened 1 (sickened 2 on a critical failure). The creature then becomes temporarily immune for 1 minute. The grothlut can activate or deactivate the aura by using a single free action that has the concentrate trait. A grothlut usually does not begin moaning until it senses the presence of a non-grothlut creature, and it usually stops once it doesn't sense any more such creatures.

Speed 20 feet

Melee [>] claw +11 (agile), Damage 1d10+8 slashing

Ranged [>] digestive spew +7 (acid, range increment 15 feet, splash), Damage 2d6 acid damage plus 1d6 splash acid damage

Bestiary, page 158. Expanded in LOIL.