Armor Class 12 (natural armor)
Hit Points 19 (3d10 + 3)
Speed 20 ft., swim 30 ft.
Skills Perception +2, Stealth +2
Senses passive Perception 12
Languages —
Challenge 1
Hold Breath. The two-headed crocodile can hold its breath for 15 minutes.
Two Heads. The two-headed crocodile has advantage on Wisdom (Perception) checks and on saving throws against being blinded, charmed, deafened, frightened, stunned, and knocked unconscious.
Wakeful. When one of the crocodile's heads is asleep, its other head is awake.
Multiattack. The two-headed crocodile makes two attacks with its bite.
Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 7 (1d10 + 2) piercing damage, and the target is grappled (escape DC 12). Until this grapple ends, the target is restrained, and that head of the crocodile can't bite another target.
IMR, p. 89