Dimetrodon

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

Dimetrodon (CR 3)

Large Animal
Alignment: Neutral
Initiative: +6
Senses: Low-Light Vision, Scent; Perception +6
  Speed: 30 feet
Space: 10 feet
 

Defense

Armor Class: 14, touch 11, flat-footed 12 (+2 Dex, +3 natural, -1 size)
Hit Points: 34 (4d8+16)
Saving Throws: Fort +8, Ref +6, Will +2
 

Offense

Melee: bite +8 (1d8+7/19-20)
Reach: 5 feet
  Special Attacks: tearing bite
 

Statistics

StrDexConIntWisCha
20 (+5) 15 (+2) 18 (+4) 1 (-5) 12 (+1) 3 (-4)
Base Attack Bonus: +3
CMB +9
CMD 21 (25 vs. Trip)
  Feats: Improved Initiative, Weapon Focus (bite)
  Skills: Perception +6, Stealth +3
  Languages:
 

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.
 

Ecology

Environment: Warm Forests
Organization: solitary, pair, or pack (3-12)
Treasure: none

  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.
  Dimetrodon Companions
  Starting Statistics: Size Medium; Speed 30 ft.; AC +2 natural armor; Attack bite (1d8 Ability Scores Str 12, Dex 16, Con 14, Int 1, Wis 12, Cha 3; Special Qualities tearing bite.
  7th-Level Advancement: Size Large; AC +1 natural armor; Attack bite (2d8 Ability Scores Str +8, Dex -2, Con +4.