SRD:Devastation Beetle

=DEVASTATION BEETLE=

Vermin Traits: Immune to mind-affecting effects (charms, compulsions, phantasms, patterns, and morale effects).

Trample (Ex): A devastation beetle can trample Gargantuan and smaller creatures for 30d10+24 points of damage. Opponents who do not make attacks of opportunity against the devastation beetle can attempt a Reflex save (DC 90) to halve the damage.

Acid Cloud (Ex): A devastation beetle exudes a constant vapor that radiates outward in every direction for 60 feet. This vapor deals 6d6 points of acid damage each round to anyone caught in the cloud.

See Wikipedia Entry: Beetle