* AudienceAlienatingPremise: Many who say they can't get into the series cite the renderings of dead animals like [[spoiler: the burned sheep]] or the zombie dogs as putting them off.
* CompleteMonster:
** "What the Cat Dragged In": [[OurDemonsAreDifferent The Harrow]] is a {{sadist}}ic demon summoned by the former witch's familiar cat, Dymphna. Upon being bound, the Harrow traps Dymphna's [[WouldHurtAChild kittens]] and their caretaker, forcing the latter to try to kill the former two and leading to her death in self-defense. Reviving her, the Harrow forces this to [[AndIMustScream repeat constantly]], torturing all of them so horribly the kittens scratch their eyes out to escape, even trying to kill themselves only to be revived and tortured all the more by the demon. Upon defeat, the Harrow attempts to [[DraggedOffToHell drag Dymphna and her allies back to hell]] for eternal torture at the hands of its brethren.
** ''Occupied Territory'': [[TsuchigumoAndJorogumo The jorōgumo sisters]] are a trio of {{Yokai}} who relish in the curse of the ancient Tsuchigumo. Taking the chance to slaughter and devour numerous humans for sheer gluttony, they attempt to kill the investigating dogs so as not to be stopped. Allying with the tsuchigumo's misplaced grudge, they intend to help overrun the world and [[KillAllHumans wipe out all humanity]].
* NauseaFuel: The giant pet-eating frog from "The Gathering Storm". Also, the occasional undead creatures that show up are pretty grotesque.
* SpiritualSuccessor: ''Beasts of Burden'', like the older series ''Literature/{{Bunnicula}}'', follows the supernatural-themed adventures of pets. Unlike ''Bunnicula'', it's for an older audience (and for those who aren't bothered by cute talking animals enduring horrific physical peril and scarring emotional trauma).
* TheWoobie: Poor Jack. Unfortunately, the horrors he and his friends go through often take a large toll upon the timid beagle in particular due to his supernatural sensitivity — he’s been tormented by a ghost haunting his doghouse, possessed by murdered puppies, witnessed the burnt-up true forms of an undead flock of sheep, and was most recently [[spoiler: kidnapped by Paul for his seer abilities.]] And through it all, he’s still incredibly gentle-hearted.


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