Starting in Generation IV , Pokémon in the video games sometimes had minor visual differences depending on their gender, or gender differences . Some differences were easily visible, while some are hard to see without looking closely. An example is Magikarp , the male Magikarp have yellow 'whiskers' while females have white whiskers. When it evolves into Gyarados , the males 'whiskers' are the same color blue as its body while the females are a lighter shade of blue.
Generation I
Number
Pokémon
Male
Female
Differences
003
Venusaur
Female Venusaur have a yellow bulb on the top of the flower, while male Venusaur do not.
012
Butterfree
Female Butterfree’s bottom inner section of their wings are black, but male wings are the same color all around.
019
Rattata
Male Rattata’s whiskers are longer than the females.
020
Raticate
Male Raticate’s whiskers are longer than the females.
025
Pikachu
Female Pikachu have a heart shape at the end of their tails, while males have a flat end.
026
Raichu
Female Raichu tails do not have a point at the end, while male tails do.
032 & 029
Nidoran
Male Nidoran are purple, while female Nidoran are pink. They also have seperate evolutionary lines.
041
Zubat
Male Zubat’s fangs are larger and thicker than female Zubat’s fangs.
042
Golbat
Male Golbat’s teeth are larger and thicker than the female Golbat’s fangs
044
Gloom
Females have one large white spot on the buds, while males have multiple smaller spots.
045
Vileplume
Female Vileplume have larger, and less pots on the petals, while males have smaller and more spots.
064
Kadabra
Female Kadabra have smaller whiskers than male Kadabra.
065
Alakazam
Female Alakazam have smaller whiskers than male Alakazam.
084
Doduo
Male Doduo have black necks, while female Doduo have beige necks.
085
Dodrio
Male Dodrio have black necks, while female Dodrio have beige necks.
097
Hypno
Female Hypno have longer fur on their necks and shoulders.
111
Rhyhorn
Female Rhyhorn has a shorter horn than male Rhyhorn.
112
Rhydon
Female Rhydon has a shorter horn than male Rhydon.
118
Goldeen
Female Goldeen has a shorter horn than male Goldeen.
119
Seaking
Female Seaking has a shorter horn than male Seaking.
123
Scyther
Female Scyther have longer and larger abdomen than male Scyther.
129
Magikarp
Male Magikarp have yellow whiskers, while the female Magikarp have white.
130
Gyarados
Male Gyarados have blue whiskers, while female Gyarados have white whiskers.
133
Eevee
The tan fur on the end of a female Eevee’s tail in heart shaped at the base, while male Eevee has spiky fur at the base.
Generation II
Number
Pokémon
Male
Female
Differences
154
Meganium
Male Meganium’s antenna are longer and wavier than female Meganium’s antenna.
165
Ledyba
Female Ledyba have shorter antenna than male Ledyba.
166
Ledian
Female Ledian have shorter antenna than male Ledian.
178
Xatu
Male Xatu have three yellow striped on their lower body, while female Xatu only have two.
185
Sudowoodo
Female Sudowoodo’s Antenna are shorter than male Sudowoodo’s antenna.
186
Politoed
Male Politoed’s cheeks are larger than female Politoed’s cheeks.
190
Aipom
Male Aipom have shorter hair on the top of their heads than female Aipom.
194
Wooper
Female Woopee have two branches coming out of their antenna, while male Woopee have four branches.
195
Quagsire
Female Quagsire have shorter fins coming out of their backs than male Quagsire do.
198
Murkrow
The hair on top of male Murkrow’s head is shorter than on the female Murkrow’s head.
202
Wobbuffet
Female Wobbuffet have lipstick like marking’s on their mouths, while male Wobbuffet do not.
203
Girafarig
Male Girafarig have a smaller yellow section than female Girafarig.
207
Gligar
The stinger on the tail of a female Gligar is smaller than on that of a male Gligar.
208
Steelix
Male Steelix have three outer teeth while female Steelix do not.
212
Scizor
Female Scizor have longer abdomen than male Scizor.
214
Heracross
Female Heracross have a heart shaped horn at the end, while male Heracross have a shark tail shape.
215
Sneasel
Male Sneasel have a longger and bigger left ear, while female Sneasel do not.
217
Ursaring
The fur on a male Ursaring’s shoulder is shorter than on that of a female.
221
Piloswine
Male Piloswine have longer tusks than female Piloswine.
224
Octillery
The suction cups on the bottom of female Octillery’s tentacles are smaller than that of a male Octillery’s.
229
Houndoom
The horns of a male Houndoom are longer than that of a female Houndoom.
232
Donphan
Female Donphan have shorter tusks than that of a male Donphan’s.
Generation III
Generation IV
Generation V
Number
Pokémon
Male
Female
521
Unfezant
592
Frillish
593
Jellicent
Generation VI
Number
Pokémon
Male
Female
668
Pyroar
678
Meowstic
Generation VIll
Number
Pokémon
Male
Female
876
Indeedee
Trivia
Generation IV introduced the most Pokémon with gender differences, having 31 different Pokémon.
Generation VI is currently the only generation that did not introduce a new Pokémon with a gender difference. However, it gave Eevee, a previously introduced Pokémon, a new gender difference.
This also makes Eevee the only pre-existing Pokémon to gain a gender difference after their introduction in Generation IV.
The Flying type currently has the most Pokémon with gender differences, having 18 different Pokémon species.
In contrast to this, the Ghost and Steel type tie for the least amount of Pokémon with gender differences, each having only 2.
The Fairy type is currently the only type to not have any Pokémon with a gender difference.
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