n gargantuan animal dinosaur 

Perception +21; low-light vision, scent (imprecise) 30 feet

Skills Acrobatics +19, Athletics +23 (+25 to Swim)

Str +8 Dex +4 Con +6 Int -4 Wis +2 Cha +1

Deep Breath A spinosaurus can hold its breath for 2 hours.

AC  30; Fort +23, Ref +21, Will +19

HP 200

Speed 40 feet, swim 30 feet

Melee [>] bite +23 (deadly d12, reach 20 feet), Damage 2d12+14 piercing plus Grab

Melee [>] claw +23 (agile, reach 15 feet), Damage 2d8+14 slashing

Rip and Tear [>] Requirements The spinosaurus has a creature grabbed in its jaws; Effect The spinosaurus reaches up and slashes with its claws at the creature it has grabbed, dealing 4d8 slashing damage (DC 30 basic Reflex save) and 1d6 persistent bleed damage.

Staggering Sail [>>] (incapacitation) Requirements The spinosaurus is swimming on the surface of water; Effect With a powerful lunge to the side, the spinosaurus uses its sail to slap the surface of the water, creating a crushing wave of water that deals 6d6 bludgeoning damage in a 30-foot cone. Each creature in the water in the area must attempt a DC 30 Reflex save. Critical Success The creature is unaffected.Success The creature takes half damage.Failure The creature takes full damage and is slowed 1 until the end of its next turn.Critical Failure The creature takes double damage and is stunned 3.

Swallow Whole [>] (attack) Medium, 2d12+12 bludgeoning, Rupture 19.

Bestiary 2, page 83.