Diplodocus

This enormous, long-necked quadruped moves with an uncanny grace, holding its lengthy, whiplike tail out level behind it.
 

Diplodocus (CR 12)

Colossal Animal
Alignment: Neutral
Initiative: +6
Senses: Low-Light Vision, Scent; Perception +32
  Speed: 30 feet
Space: 30 feet
 

Defense

Armor Class: 25, touch 4, flat-footed 23 (+2 Dex, +21 natural, -8 size)
Hit Points: 190 (20d8+100)
Saving Throws: Fort +17, Ref +14, Will +11
 

Offense

Melee: 2 tail lashes +22 (4d6+15/19-20)
Reach: 60 feet
  Special Attacks: Trample (2d8+22, DC 35)
 

Statistics

StrDexConIntWisCha
40 (+15) 14 (+2) 21 (+5) 2 (-4) 17 (+3) 11 (+0)
Base Attack Bonus: +15
CMB +38 (+40 Bull Rush)
CMD 50 (52 vs. Bull Rush, 54 vs. Trip)
  Feats: Awesome Blow, Combat Reflexes, Critical Focus, Powerful Maneuvers, Improved Critical (tail lash), Improved Initiative, Iron Will, Skill Focus (Perception), Staggering Critical
  Skills: Perception +32
  Languages:
 

Special Abilities

Tail Lash (Ex)

The diplodocus prefers to attack with its tail. The dinosaur can snap its incredibly long tail with surprising speed like an enormous whip-this is a primary attack that deals bludgeoning and slashing damage. A diplodocus can make two separate attacks with its tail lash as a full-attack action.
 

Ecology

Environment: Warm Plains
Organization: solitary, pair, or herd (3-14)
Treasure: none

  The diplodocus is one of the longest dinosaurs, capable of reaching lengths of 100 feet or more. Much of this length is taken up by the diplodocus's tremendously powerful whiplike tail, a devastating weapon capable of striking at a considerable range.
  Diplodocus Companions
  Starting Statistics: Size Medium; Speed 30 ft.; AC +6 natural armor; Attack tail (1d8 Ability Scores Str 10, Dex 14, Con 10, Int 2, Wis 12, Cha 10; SQ low-light vision, scent.
  7th-level Advancement: Size Large; AC +3 natural armor; Attack tail (2d6 Ability Scores Str +6, Con +4; SQ tail lash.