| Hit Dice: | 9d10+45 (94 hp) |
| Initiative: | +0 |
| Speed: | 30 ft. (6 squares), burrow 20 ft., fly 50 ft. (poor) |
| Armor Class: | 24 (–1 size, +15 natural), touch 9, flat-footed 24 |
| Base Attack/Grapple: | +9/+20 |
| Attack: | Bite (ankheg) +12 melee (2d6+7 plus 1d4 acid) |
| Full Attack: | Bite (ankheg) +12 melee (2d6+7 plus 1d4 acid) and bite (white dragon) +10 melee (2d6+3) and butt (goat) +10 melee (1d8+3) |
| Space/Reach: | 10 ft./5 ft. |
| Special Attacks: | Breath weapon (20 ft. cone of cold, 3d8, DC 19) Improved grab, spit acid |
| Special Qualities: | Darkvision 60 ft., low-light vision, scent, tremorsense 60 ft. |
| Saves: | Fort +11, Ref +6, Will +4 |
| Abilities: | Str 25, Dex 11, Con 21, Int 3, Wis 13, Cha 6 |
| Skills: | Climb +8, Listen +8, Spot +5; racial bonuses |
| Feats: | Alertness, Toughness, Multiattack [bonus] |
| Environment: | Temperate and warm forest, plains, and underground |
| Organization: | Solitary, pair, or cluster (3–4) |
| Challenge Rating: | 9 |
| Treasure: | None |
| Alignment: | Always chaotic evil |
| Advancement: | 10–18 HD (Large); 19–27 HD (Huge) |
| Level Adjustment: | — |
Insane or bored wizards, liches, or Dungeon Masters: who knows what made these silly things?
A chimeric ankheg usually lies 5 to 10 feet below the surface until its antennae detect the approach of prey. It then burrows up to attack. (Treat this as a charge, even though the chimeric ankheg does not need to move 10 feet before attacking.)
Clusters of chimeric ankhegs share the same territory but do not cooperate. If several attack, each tries to grab a different foe. If there aren’t enough targets, two might grab the same creature in a tug-of-war.
Breath Weapon (Su): A chimeric ankheg’s dragon head can emit a 20-foot cone of cold that deals 3d8 points of cold damage (Reflex DC 19 half). After using it, a chimeric ankheg may not use its breath weapon again for 1d4 rounds.
Improved Grab (Ex): To use this ability, a chimeric ankheg must hit with its bite attack from its ankheg head. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If the chimeric ankheg is damaged after grabbing its prey, it retreats backward down its tunnel at its land speed (not its burrow speed), dragging the victim with it.
Spit Acid (Ex): 30-ft. line, once every 6 hours; damage 4d4 acid, Reflex DC 14 half. One such attack depletes the chimeric ankheg’s acid supply for 6 hours. It cannot spit acid or deal acid damage during this time. The save DC is Constitution-based. An ankheg does not use this ability unless it is desperate or frustrated. It most often spits acid when reduced to fewer than half its full normal hit points or when it has not successfully grabbed an opponent.
Skills: A chimeric ankheg’s three heads give it a +2 racial bonus on Listen and Spot checks.
Source: Monster Manual II, page 207. This creature’s statistics block has been updated to version 3.5 as given in the D&D® V.3.5 Accessory Update for Monster Manual II and for the newer ankheg in the Monster Manual (version 3.5).