Large Beast, unaligned
Armor Class 12 (natural armor)
Hit Points 19 (3d10+3)
Speed swim +20, walk +20
Challenge 1/2
Skills stealth +2
Senses passive Perception 10
Hold Breath. The crocodile can hold its breath for 15 minutes.
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.
Source: 5e Core Rules · OGL/Open