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Orthus Hound

Medium monstrosity, unaligned

Armor Class 15 (natural armor)
Hit Points 39 (6d8 + 12)
Speed 40 ft.

13 (+1) 15 (+2) 15 (+2) 4 (-3) 12 (+1) 6 (-2)

Skills Perception +5
Senses passive Perception 15
Challenge 2 (450 XP)

Special Traits

  • Keen Hearing and Smell. The orthus hound has advantage on Wisdom (Perception) checks that rely on hearing or smell.
  • Pack Tactics. The orthus hound has advantage on an attack roll against a creature if at least one of the orthus hound’s allies is within 5 feet of the creature and the ally isn’t incapacitated.
  • Two-Headed. The orthus hound has advantage on Wisdom (Perception) checks and on saving throws against being blinded, charmed, deafened, frightened, stunned, or knocked unconscious.


  • Multiattack. The dog makes three attacks: two with its bite and one to constrict.
  • Bite. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 2) piercing damage. If the target is a creature, it must succeed on a DC 11 Strength saving throw or be knocked prone.
  • Constrict. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 9 (2d6 + 2) bludgeoning damage, and the target is grappled (escape DC 11). Until this grapple ends, the target is restrained, and the orthus hound can’t constrict another target.


This large mastiff stands as tall as a man at the shoulder and has two heads and a long, snake-like tail.

Orthus hounds are large two-headed hounds that can be distinguished by their penetrating double bark. Orthus hounds always hunt in packs, and it is not uncommon to find more than one pack hunting in the same area.

An orthus hound attacks by biting, with each head biting independently of the other.

Child of Echidna. Orthus hounds were birthed by Echidna and are sacred to her, although she is not sensate enough to care about the fate of her children. It is believed orthus hounds spawn sphinxes.

Section 15: Copyright Notice

5E RPG: Ancient Adventures. Copyright 2020, Mal and Tal, LLC; Author Michael Tresca.