Dinosaur, Pachycephalosaurus

This bipedal reptile has a rounded, dome-like head adorned with bony frills and ridges.

Pachycephalosaurus CR 4

XP 1,200
N Large animal
Init +2; Senses low-light vision, scent; Perception +8


AC 17, touch 11, flat-footed 15 (+2 Dex, +6 natural, -1 size)
hp 37 (5d8+15)
Fort +7, Ref +6, Will +2


Speed 40 ft.
Melee slam +8 (2d6+9)
Space 10 ft.; Reach 10 ft.
Special Attacks clobbering charge


Str 22, Dex 15, Con 17, Int 2, Wis 12, Cha 5
Base Atk +3; CMB +10; CMD 22
Feats Improved Bull Rush, Power Attack, Run
Skills Perception +8, Stealth +2


Clobbering Charge (Ex)

When a pachycephalosaurus hits a target with its slam attack at the end of a charge, it can initiate a bull rush as a free action to move the struck target back in the same direction as the dinosaur’s charge. The pachycephalosaurus cannot move with the target of the bull rush. If a pachycephalosaurus scores a critical hit against a creature with its slam attack at the end of a charge, it also staggers the target for 1 round. If the victim succeeds at a DC 18 Fortitude save, the stagger effect is negated, but the victim still suffers the effects of the dinosaur’s bull rush attempt. The save DC is Strength-based.

Source Wikipedia
Source Wikipedia


Environment warm or temperate plains
Organization solitary or pair
Treasure none

A pachycephalosaurus is a normally peaceful dinosaur that grows irate and violent during mating season or when its herd is intruded upon by potential predators. The dinosaur’s skull has a distinctive dome-shaped crown surrounded by numerous bony horns—this, combined with the dinosaur’s powerful, compact neck, allows it to make battering-ram-like charges capable of inflicting great damage.

Pachycephalosauruses grow to a length of 15 feet and weigh 1,400 pounds.

Section 15: Copyright Notice

Pathfinder Roleplaying Game Bestiary 3, © 2011, Paizo Publishing, LLC; Authors Jesse Benner, Jason Bulmahn, Adam Daigle, James Jacobs, Michael Kenway, Rob McCreary, Patrick Renie, Chris Sims, F. Wesley Schneider, James L. Sutter, and Russ Taylor, based on material by Jonathan Tweet, Monte Cook, and Skip Williams.
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