→Dub edits: feel free to remove the last sentence if it delves too far into speculation
In the dub, Brock states that there's no way Pikachu and Piplup would be acting the way they are for "all sorts of reasons" . Originally, he directly states it's impossible for two Pokémon of the same gender to behave this way. It's possible this was changed due to the original line potentially being perceived as homophobic.
==In other languages==