The Little Shop of Horrors was interested because of "A Bucket of Blood" and said the development process was similar to that of the earlier film, when he and Griffith were inspired by visiting various coffee houses: We tried a similar approach for "The Little Shop of Horrors", dropping in and out of various downtown dives. We ended up at a place where Sally Kellerman (before she became a star) was working as a waitress, and as Chuck and I vied with each other, trying to top each other's sardonic or subversive ideas, appealing to Sally as a referee, she sat down at the table
Pet Shop of Horrors differ for each animal sold (although each animal's contract includes not showing it to anyone), and breaking this contract usually results in dire (and sometimes disturbing) consequences for the buyer, for which the pet shop claims no liability. Individual chapters of "Pet Shop of Horrors" are often based on these consequences, and are each written as a stand-alone story, usually introducing one or more new characters in each chapter. With the exception of the main characters and their families, it is rare for a character to carry over to a later chapter, providing the series with a very episodic nature.