Armor Class 14
Hit Points 45 (6d10 + 12)
Speed 30 ft., burrow 10 ft.
Senses Darkvision 60 ft., Tremorsense 60 ft., passive Perception 11
Languages —
Challenge 2
Tunneler. The ankheg can burrow through solid rock at half its Burrow Speed and leaves a 10-foot-diameter tunnel in its wake.
Bite. m +5 (with Advantage if the target is Grappled by the ankheg), reach 5 ft. Hit: 10 (2d6 + 3) Slashing damage plus 3 (1d6) Acid damage. If the target is a Large or smaller creature, it has the Grappled condition (escape DC 13).
Acid Spray (Recharge 5–6). dex DC 12, each creature in a 30-foot-long, 5-foot-wide Line. 14 (4d6) Acid damage. Half damage.
Monster Manual (2024), p. 18