Crocodile is a Large beast with unaligned alignment and Challenge Rating 1/2 in the 2014 SRD. This stat block includes AC 12, 19 hit points, speeds, traits, and actions.
Bite - Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 7 (1d10 + 2) piercing damage, and the target is grappled (escape DC 12). Until this grapple ends, the target is restrained, and the crocodile can't bite another target