Continuity mistake: When Misty says, "Great, just keep it away from me, will ya?" the Poké Ball Ash is holding has one ring on it, but in the next shot it has two. (00:02:42)
Continuity mistake: When Ash says, "Isn't it cute?" the strip on his left shoe to the left of the shoelaces there is white, but in the next shot, it is black. (00:04:12)
Continuity mistake: When Ash sends out Pidgeotto and Caterpie, Ekans' yellow underbelly turns purple. (00:15:24 - 00:17:01)
Continuity mistake: In the previous episode, when Ash throws the Poké Ball, he says, "Poké Ball, go." However, in this episode, he says, "Caterpie, you're mine!" instead. In addition, in the previous episode, he had his bag on, but in this episode, it is missing. (00:01:17)
Continuity mistake: When Jessie says that Team Rocket is here to steal Pikachu, the tip on Meowth's tail disappears. (00:13:18)