n gargantuan animal 

Perception +30; darkvision, tremorsense (imprecise) 30 feet

Skills Acrobatics +33, Athletics +35, Stealth +33 (+37 in deserts)

Str +9 Dex +7 Con +7 Int -5 Wis +4 Cha -4

AC  42; Fort +31, Ref +33, Will +28

HP 340

Speed 50 feet, burrow 25 feet, climb 25 feet

Melee [>] jaws +35 (reach 10 feet), Damage 4d10+17 piercing

Melee [>] claw +35 (agile, reach 20 feet), Damage 3d10+17 slashing

Earth Shaker Each turn, the first time the duneshaker solifugid is adjacent to a Large or smaller creature during a move action it's using, that creature must succeed at a DC 39 Reflex save or fall prone.

Pounce [>] The duneshaker solifugid Strides and makes a Strike at the end of that movement. If the duneshaker solifugid began this action hidden, it remains hidden until after this ability's Strike.

Rend [>] claw

Venom Spray [>>] (poison) The duneshaker solifugid spews toxic barbs at all creatures in a 30-foot cone. Each creature within the area takes 10d6 poison damage (DC 39 basic Fortitude save). A creature that fails its saving throw is blinded for 1d6 rounds (or permanently on a critical failure). The duneshaker solifugid can't use Venom Spray again for 1d4 rounds.

Bestiary 2, page 246. Originally in AoA5.