n large animal 

Perception +7; low-light vision

Skills Athletics +8, Stealth +7 (+11 in water)

Str +4 Dex +1 Con +3 Int -5 Wis +1 Cha -4

Deep Breath The crocodile can hold its breath for about 2 hours.

AC  18; Fort +9, Ref +7, Will +5

HP 30

Speed 20 feet, swim 25 feet

Melee [>] jaws +10, Damage 1d10+4 piercing plus Grab

Melee [>] tail +10 (agile), Damage 1d6+4 bludgeoning

Aquatic Ambush [>] When hiding in water, the crocodile can move up to 35 feet, traveling on water and land, up to a creature that doesn't see it and doesn't know where it is and make a Strike against that creature. The creature is flat-footed against the attack.

Death Roll [>] (attack) The crocodile tucks its legs and rolls rapidly, twisting its victim. It makes a jaws Strike with a +2 circumstance bonus to the attack roll against a creature it has grabbed. If it hits, it also knocks the creature prone. If it fails, it releases the creature.

Grab [>] After succeeding at a jaws Strike, the crocodile can use this action to automatically give the target the grabbed condition until the end of the crocodile's next turn.

TiO, page 11.