One story I read is [Miranda and Geraldine](https://www.literotica.com/s/miranda-and-geraldine-ch-01). Its about a wealthy woman becomes a girl’s pet. Another one is Lori – A neighbor’s delight. But that story is rather extreme.
Source: reddit.com/r/Erotica/comments/gox49k/what_are_your_favorite_petplay_stories