Ankheg
Large monstrosity, unaligned
Armor Class
14 (natural armor, 11 while prone)
Hit Points
39 (6d10+6)
Speed
30 ft., burrow 10 ft.
STR
17 (+3)
DEX
11 (0)
CON
13 (+1)
INT
1 (-5)
WIS
13 (+1)
CHA
6 (-2)
Senses
darkvision 60 ft., tremorsense 60 ft.
Challenge
2 (450 XP)
Actions
Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 10 (2d6 + 3) slashing damage plus 3 (1d6) acid damage. If the target is a Large or smaller creature, it is grappled (escape DC 13). Until this grapple ends, the ankheg can bite only the grappled creature and has advantage on attack rolls to do so.
Acid Spray (Recharge 6). The ankheg spits acid in a line that is 30 ft. long and 5 ft. wide, provided that it has no creature grappled. Each creature in that line must make a DC 13 Dexterity saving throw, taking 10 (3d6) acid damage on a failed save, or half as much damage on a successful one.