The material below is Open Game Content from the PFRPG Core and Bestiary use the main license
This reptile lunges out of the placid water with shocking speed. Its jaw gapes open in a roar, its powerful tail lashing behind.
Crocodile CR 2 (XP 600)
N Large animal
Init +1; Senses low-light vision; Perception +8
AC 14, touch 10, flat-footed 13 (+1 Dex, +4 natural, –1 size)
hp 22 (3d8+9)
Fort +6, Ref +4, Will +2
Speed 20 ft., swim 30 ft.; sprint
Melee bite +5 (1d8+4 plus grab) and tail slap +0 (1d12+2)
Space 10 ft.; Reach 5 ft.
Special Attacks death roll (1d8+6 plus trip)
Str 19, Dex 12, Con 17, Int 1, Wis 12, Cha 2
Base Atk +2; CMB +7 (+11 grapple); CMD 18 (22 vs. trip)
Feats Skill Focus (Perception, Stealth)
Skills Perception +8, Stealth +5 (+13 in water), Swim +12; Racial Modifiers +8 on Stealth in water
SQ hold breath
Environment warm rivers and marshes
Organization solitary, pair, or colony (3–12)
Death Roll (Ex) When grappling a foe of its size or smaller, a crocodile can perform a death roll upon making a successful grapple check. As it clings to its foe, it tucks in its legs and rolls rapidly, twisting and wrenching its victim. The crocodile inflicts its bite damage and knocks the creature prone. If successful, the crocodile maintains its grapple.
Hold Breath (Ex) A crocodile can hold its breath for a number of rounds equal to 4 times its Constitution score before it risks drowning.
Sprint (Ex) Once per minute a crocodile may sprint, increasing its land speed to 40 feet for 1 round.
A crocodile is a primeval reptile that dwells in swamps or along the banks of rivers, a habitat that often puts it in violent contact with unsuspecting prey that come to the water's edge to drink.
The typical crocodile is 14 feet long and weighs 1,400 pounds, but larger species exist. You can use these statistics for similar creatures, such as alligators.
The material below is Open Game Content from a 3PP Source
Animal Companion Stats
Starting Statistics: Size Small; Speed 20 ft., swim 30 ft.; AC +4 natural armor; Attack bite (1d6); Ability Scores Str 15, Dex 14, Con 15, Int 1, Wis 12, Cha 2; Special Qualities hold breath, low-light vision.
4th-Level Advancement: Size Medium; Attack bite (1d8) or tail slap (1d12); Ability Scores Str +4, Dex –2, Con +2; Special Attacks death roll, grab, sprint.