Hell hounds are cruel, intelligent hunters, particularly dangerous in packs. They are tireless trackers. Fire giants are natural allies, at least until the giant makes the mistake of treating the hell hound as a pet.
Disturbingly, there is a process by which common dogs can be slowly transformed into hell hounds. By feeding the animal a diet of tiefling blood and sinister alchemical supplements, the hound slowly becomes more vicious as it gains fiendish qualities.
- Wolfgang Baur et al. (2010). Bestiary 2 (First Edition), p. 47. Paizo Publishing, LLC. ISBN 978-1-60125-268-5
- Gareth Hanrahan, Steve Kenson, Patrick Renie, Tork Shaw, and Jerome Virnich. (2012). Knights of the Inner Sea, p. 23. Paizo Publishing, LLC. ISBN 978-1-60125-460-3
- Sean K Reynolds. (2009). The Bastards of Erebus. The Bastards of Erebus, p. 43. Paizo Publishing, LLC. ISBN 978-1-60125-190-9