This episode aired between main series episodes Candid Camerupt! (2003) and I Feel Skitty (2003) in Japan.
If one were to count the amount of Tauros stampeding in the beginning of the episode, there are only 24 instead of 30.
Noctowl is Ash's only Pokémon residing at Professor Oak's Laboratory at the time not to appear in this episode. However, the dub removes a shot where Ash's Heracross appears.
Professor Oak reads the title card of this episode.
Mimey is revealed to know Psychic.