Assuming all that, here's how it looks.
Gargantuan Animal
Hit Dice: 15d10+120 (202 hp)
Initiative: +3
Speed: 50 ft. (10 squares)
Armor Class: 20 (-4 size, +3 Dex, +11 natural), touch 9, flat-footed 17
Base Attack/Grapple: +15/+39
Attack: Bite +23 melee (2d6+12)
Full Attack: Bite +23 melee (2d6+12) and two stamps +21 melee (2d6+8)
Space/Reach: 15 ft./10 ft. (15 ft. with bite)
Special Attacks: Spit, trample 3d8+18
Special Qualities: Low-light vision, scent, sure feet
Saves: Fort +17, Ref +12, Will +7
Abilities: Str 34, Dex 16, Con 26, Int 13-14, Wis 17, Cha x
Skills: x
Feats: Ability Focus (spit), Endurance, Multiattack, Point Blank Shot, Power Attack