*In the international versions of Generation II, due to how the battlefield display is programmed, Nidoran♂ and Nidoran♀ have their gender icon shown twice, once in their name, and once after the level. This does not occur in the Japanese and Korean games, however, as the gender icon was present after ''all'' Pokémon's names due to the shorter character limit there. This was addressed in all later generations, which prevent the gender icon from showing up when an un-nicknamed Nidoran of either gender is on the field.
*In [[Pokémon Mystery Dungeon: Explorers of Time and Explorers of Darkness]] and [[Pokémon Mystery Dungeon: Explorers of Sky]], the gender of a [[wild Pokémon]] in a [[dungeon]] is determined by the current number of floor the player stands on. If the number is odd, all wild Pokémon that can be male will be male; if it is even, all wild Pokémon that can be female will be female.
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