The first collected volume of Pet Shop of Horrors manga was published in Japan, compiling the early chapters of the series.
The anime adaptation of Pet Shop of Horrors aired in Japan, bringing the series to new audiences through television.
The English dubbed version of Pet Shop of Horrors anime was broadcast in North America, increasing accessibility to English-speaking audiences.
The sequel series, Pet Shop of Horrors: Tokyo, was first published as a manga, continuing the story in a new setting.