This armor-plated creature is related to the bulette except what it lacks in spines, it makes up in armor.
Ironback (CR 9)
XP 6,400
N Large Animal
Init +6; Senses Darkvision 60 ft., low-light vision, scent; Perception +13
DEFENSE
AC 25, touch 11; flat-footed 23 (+2 dex, +14 natural, -1 size)
hp 98 (10d8+60)
Fort +12, Ref +9, Will +6
DR 5/cold-iron; Resist Earth 5
OFFENSE
Speed 30 ft.
Melee 2 Claws +13 (1d8+7), Bite +14 (2d6+10/19-20)
Space 10 ft.; Reach 10 ft.
Special Attacks Leap, Savage Bite
STATISTICS
Str 24, Dex 15, Con 20, Int 2, Wis 13, Cha 6
Base Atk +7; CMB +15; CMD 27 (31 vs. trip)
Feats Improved Initiative, Iron Will, Skill Focus (Perception), Toughness, Weapon Focus (Bite)
Skills Acrobatics +11 (+19 jumping), Perception +13, Racial Modifiers +8 on Acrobatics checks made to jump
SPECIAL ABILITIES
Leap (Ex)
An ironback can perform a special kind of pounce attack by jumping into combat. When an ironback charges, it can make a DC 20 Acrobatics check to jump into the air and land next to its enemies. If it makes the Acrobatics check, it can follow up with four claw attacks against foes in reach, but cannot make a bite attack.
Savage Bite (Ex)
An ironback’s bite is particularly dangerous. It applies 1-1/2 times its Strength modifier to damage inflicted with its bite attack, and threatens a critical hit on a 19–20.