* AdaptationDisplacement: The book is not nearly as remembered as the Disney version.
* MoralEventHorizon: In-story, Missus claims that biting a human is always this for a dog. She is perfectly willing to bite Cruella or the Badduns, but she justifies that on the grounds that they aren't really human (and in Cruella's case, at least, she may be right, as the book and a deleted song take the liberty to imply [[MaybeMagicMaybeMundane that her last name might just be meant literally....]])
* TheWoobie: Perdita.