Sabrina, the Teenage Witch

There were seven real cats at any one time on the set, two animatronics, and two stuffed animal type cats that were used for scenes that were inappropriate for the real cats.

Sabrina (Melissa Joan Hart) and Salem (Nick Bakay) are the only ones to appear in all episodes.

Emily Hart is the only guest star to appear in all seven seasons and the seventh is the only season where she appears in more than one episode.