Pathfinder Reference Document
Pathfinder Reference Document

Dinosaur, Dimetrodon

The massive sail on the back of this squat reptilian creature flexes and twitches as the beast stalks forward.

Dimetrodon CR 3

XP 800

N Large animal

Init +6; Senses low-light vision, scent; Perception +6


AC 14, touch 11, flat-footed 12 (+2 Dex, +3 natural, –1 size)

hp 34 (4d8+16)

Fort +8, Ref +6, Will +2


Speed 30 ft.

Melee bite +8 (1d8+7/19–20)

Space 10 ft.; Reach 5 ft.

Special Attacks tearing bite


Str 20, Dex 15, Con 18, Int 1, Wis 12, Cha 3

Base Atk +3; CMB +9; CMD 21 (25 vs. trip)

Feats Improved Initiative, Weapon Focus (bite)

Skills Perception +6, Stealth +3


Environment warm forests

Organization solitary, pair, or pack (3–12)

Treasure none

Special Abilities

Tearing Bite (Ex) A dimetrodon's jaws are filled with razor-sharp teeth of two different sizes. This gives the creature a threat range of 19–20 with its bite attack.

A dimetrodon is a quadrupedal reptile similar in shape to a crocodile, but with a blunter snout filled with jagged, sharp teeth. Its most distinguishing feature is the massive sail that runs the length of its back. By extending or contracting the fin, the cold-blooded reptile can control its body temperature with ease. While they are not technically dinosaurs, dimetrodons are still often found dwelling in regions inhabited by such creatures.

A fully grown adult dimetrodon can reach a length of up to 15 feet and weigh upward of 2,000 pounds.