Tyrannosaurus

This bipedal dinosaur's front arms seem small compared to the rest of its bulk, but its enormous head is all teeth.
 

Tyrannosaurus (CR 9)

Gargantuan Animal
Alignment: Neutral
Initiative: +5
Senses: Low-Light Vision, Scent; Perception +37
  Speed: 40 feet
Space: 20 feet
 

Defense

Armor Class: 21, touch 7, flat-footed 20 (+1 Dex, +14 natural, -4 size)
Hit Points: 153 (18d8+72)
Saving Throws: Fort +15, Ref +12, Will +10
 

Offense

Melee: bite +20 (4d6+22/19-20 plus Grab)
Reach: 20 feet
  Special Attacks: Swallow Whole (2d8+11, AC 17, hp 15)
 

Statistics

StrDexConIntWisCha
32 (+11) 13 (+1) 19 (+4) 2 (-4) 15 (+2) 10 (+0)
Base Attack Bonus: +13
CMB +28 (+32 Grapple)
CMD 39
  Feats: Bleeding Critical, Critical Focus, Diehard, Endurance, Improved Critical (bite), Improved Initiative, Iron Will, Run, Skill Focus (Perception)
  Skills: Perception +37 Languages:
  Special Qualities: powerful bite

 

Special Abilities

Powerful Bite (Ex)

A tyrannosaurus applies twice its Strength modifier to bite damage.
 

Ecology

Environment: Warm Forests or Plains
Organization: solitary, pair, or pack (3-6)
Treasure: none

  The tyrannosaurus is an apex predator that measures 40 feet long and weighs 14,000 pounds.
  Tyrannosaurus Companions Starting Statistics: Size Medium, Speed 30 ft.; AC +4 natural armor; Attack bite (1d8 Ability Scores Str 14, Dex 16, Con 10, Int 2, Wis 15, Cha 10; Special Qualities low-light vision, scent.
  7th-Level Adv.: Size Large; AC +3 natural armor; Attack bite (2d6 Ability Scores Str +8, Dex -2, Con +4; Special Qualities grab, powerful bite.