List of Pokémon with gender differences

Although most look identical regardless of gender, some species have differences in appearance due to gender, with noticeable differences between the males and females. Gender differences were introduced in Generation IV.
These differences are a reference to , which is commonly seen in many real organisms and may offer some clues to their biology and behavior.
Generation IV, in addition to introducing new Pokémon with gender differences, also modified several older Pokémon to have gender differences. In most cases, the male version retained the original design while the female was altered. However, the inverse is true for , , , , , , , , , and . These Pokémon, as well as , , , , , , and , use their female designs for their official artwork, while other Pokémon with gender differences introduced in the first four generations use the male designs.
Later generations would introduce far fewer Pokémon with gender differences, but those that were introduced differ much more drastically in appearance and have separate official artwork for each gender. Starting in Generation VI, some Pokémon even have different , base stats, and/or moves they can learn depending on their gender.
Starting in Generation IV, certain Pokémon's evolution is also affected by their gender. evolves into if it is female or if it is male. Only female and can evolve into and respectively, with the males unable to evolve at all. Only male can evolve into , though either gender can evolve into ; similarly, only female can evolve into , though either gender can evolve into . However, Combee is the only one of these Pokémon to have a visual gender difference.
In , in the gate to Canalave City, Professor Rowan's assistant upgrades the 's Pokédex to be able to display form differences, including gender differences. In later games, they are displayed from the start.
==List of Pokémon==
===Generation I===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
===Generation II===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
===Generation III===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
===Generation IV===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
===Generation V===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
===Generation VI===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
===Generation VIII===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
===Generation IX===
 	Name 	Male	Female		
Difference	Difference	Male	Female		
 	 	 	 		
==Trivia==
* and are gendered counterparts in a similar vein to gender differences, but they are considered two separate species. They were introduced in Generation I, prior to the introduction of gender as a mechanic in Generation II and of gender differences in Generation IV. Notably, s produced by Nidoran♀ or Nidoran♂ can hatch into either Pokémon. A similar male-female gendered counterpart pair is and , who also can produce Eggs containing each other.
** The male-female pairs and , as well as and , can also be considered gendered counterparts, though they cannot produce Eggs containing each other.
* Some Pokémon with gender differences have unique distinctions:
** is the only pseudo-legendary Pokémon to have gender differences.
** is the only regional form to have a gender difference.
** The evolutionary line is the only first partner Pokémon line to have all of its members have gender differences.
** is the only Pokémon with gender differences from a branched Evolution line that evolves from a Pokémon without gender differences.
* is the only type that lacks a with gender differences.
* Generation IV introduced the most Pokémon with gender differences, with a total of 31.
** It was also the first generation to introduce gender-based evolution, and the first to introduce new gender differences to Pokémon established in previous generations.
* Generation IX introduced the fewest Pokémon with gender differences of generations that introduced Pokémon with gender differences, introducing only one.
* Generation VII is the only generation that did not introduce any Pokémon that have gender differences. However, it did introduce a Pokémon that can only evolve if it is a specific gender (only female can evolve into ) and a new gender difference for that was initially exclusive to the player's Eevee.
* No Mega Evolutions or Gigantamax forms have gender differences, even if other forms of the same species do.
* Despite having very prominent gender differences, and only have artwork and a menu sprite for the male of the species.
* Despite not having any gender differences, the Rotom Pokédex displays separate models for male and female , using whichever spot pattern the player caught first for each gender.
* Some Pokémon with gender differences evolve into Pokémon that do not have gender differences, namely evolving into , evolving into , evolving into , evolving into the Eeveelutions, evolving into , evolving into , evolving into , evolving into , and evolving into .
* Although has no gender differences in the games, in Fuecoco…Becomes a Crook?!, a Krookodile who plays the role of "mother" in a litter of and has pink eyelashes.
==Related articles==
* Gender
Category:Variant Pokémon
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