n medium beast 

Perception +23; darkvision, skeleton sense [object Object] feet, tremorsense (precise) [object Object] feet

Skills Athletics +27, Stealth +25

Str +8 Dex +4 Con +5 Int -4 Wis +4 Cha -2

Skeleton Sense A ba'aupa mdoudu can sense the presence of bones and skeletons within 60 feet; this is a precise sense when detecting dead bones but an imprecise one when detecting living bones.

AC  33; Fort +26, Ref +21, Will +23

HP 245; Immunities acid; Resistances bludgeoning 15

Reactive A ba'aupa mdoudu gains an additional reaction at the start of its turn but can use this reaction only to Slime Squirt.

Slime Squirt [R] Trigger A creature inflicts slashing or piercing damage on the ba'aupa mdoudu with a melee Strike; Effect The attacking creature takes 2d10 acid damage.

Speed 30 feet, burrow 20 feet

Melee [>] jaws +27 (deadly d12), Damage 3d8+14 piercing plus 1d10 persistent acid

Ranged [>] spit +23 (acid, range increment 60 feet), Damage 6d6 acid

Caustic Acid Whenever a creature takes acid damage from any of a ba'aupa mdoudu's abilities or Strikes, it must succeed at a DC 30 Fortitude save or become drained 1 (drained 2 on a critical failure). On each subsequent failure, the drained condition value increases by 1 (or by 2 on a critical failure), to a maximum of drained 4.

Caustic Rain [>>] (evocation, primal) The ba'aupa mdoudu spews copious amounts of acid into the air, creating a cascading rain to fall in a 10- foot radius around itself. All creatures in the area take 14d6 acid damage (DC 33 basic Reflex save). The ba'aupa mdoudu can't use Caustic Rain again for 1d4 rounds.

Stone Vrorouth A ba'aupa mdoudu can leave a tunnel when it burrows through earth or stone, and it usually does.

Strength of Thousands #4: Secrets of the Temple-City, page 80.