Huge (Magical Beast) CR 7
HP 85, hd9d10+36 AC 20 (?2 size, ?1 Dex, +13 natural), touch 7, flat-fooded 20 Fort +10, Ref +5, Will +7 Speed 40 ft. (8 squares) Initiative ?1 Spot , Listen
Standard attacks BAB +9, Grapple +25
Attacks
Full attack: Bite +15 melee (2d8+8) and 2 claws +10 melee (2d6+4)
Special Attacks/Qualities
Null psionic exhalation
Darkvision 60 ft., low-light vision, power resistance 20, scent
Skills Jump +14, Listen +7, Spot +3
Feats Closed Mind, Hostile Mind, Iron Will, Psionic Hole, TrackB
Str 27 Con 19 Dex 9 Int 2 Wis 15 Cha 20
Alignment Always neutral, Environment Underground, Organisation Solitary, pair, or cluster (3?5)

===COMBAT===
A gray glutton attacks anything psionic, or anything that stands in its way of tracking down new psionic prey. Of course, a gray glutton has to eat?and eat a lot to feed its bulk?so when not on the scent it will attack any living creature. It always breaks off attacks against nonpsionic foes if psionic prey is an option. The only creatures it refuses to eat are elves (and it dislikes the taste of dwarves). No challenge seems too extreme to it, even if that means bulling into the center of a powerful party of manifesters.
Null Psionic Exhalation (Su): As a free action, a gray glutton can breathe forth a cloud of pale blue translucent gas into an adjacent 10-foot cube. The gas is psionically poisonous; the initial damage is 1d4 power points, and the secondary damage is 3d4 power points (Fortitude DC 18 negates). Affected psionic characters and creatures subtract the lost power points from their reserves.
The save DC is Consitution-based.
Once a gray glutton has used its exhalation, it must wait 4 rounds before it can exhale again.

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System Reference Document -> List of Creatures (SRD)