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Nidoran♀ and Nidoran♂ are two separate Pokémon in the official Pokédex, not one species with a gender toggle. Nidoran♀ is #29 and evolves into Nidoqueen. Nidoran♂ is #32 and evolves into Nidoking. Both are Poison type, so the differences come down to their Pokédex numbers, listed measurements, visible cues in the official descriptions, and evolution line.
Side-by-side comparison
| Feature | Nidoran♀ | Nidoran♂ |
|---|---|---|
| National Pokédex number | #29 | #32 |
| Height in official entry | 0.4 m | 0.5 m |
| Weight in official entry | 7 kg | 9.0 kg |
| Type | Poison | Poison |
| Listed abilities | Poison Point; Rivalry | Poison Point; Rivalry |
| Listed weaknesses | Ground; Psychic | Ground; Psychic |
| Evolution line | Nidoran♀ → Nidorina → Nidoqueen | Nidoran♂ → Nidorino → Nidoking |
The measurements come from two different localized official pages. The female’s 0.4 m and 7 kg figures are from The Pokémon Company International’s official Philippines Pokédex page, accessed in 2026. The male’s 0.5 m and 9.0 kg figures are from the official Portuguese-language Pokémon.com page, also accessed in 2026. Both are catalogue values, not study results, so quote them with their units and the page they came from.
Visible differences in the Pokédex descriptions
The Pokédex text is the best place to look for how the two are meant to be told apart. The official entries describe a few distinguishing traits, though none is a separate in-game gender indicator.
Horn tip
The official Spanish-language Nidoran♀ entry states that the tip of the female’s horn is more rounded than the male’s. This is an English paraphrase of that Spanish sentence, so quote it as a translation rather than as the original wording.
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Smell, whiskers and wind
The same female entry says it has a finer sense of smell than Nidoran♂ and uses its whiskers to read wind direction, so it can find food downwind of predators. That is a behavioural description, not a physical marker you can see on a sprite.
Horn poison and ears
The official Nidoran♂ page, in its Portuguese-language Pokémon.com version, says the horn on a male’s forehead contains a powerful poison. It describes the male as cautious and attentive, with large ears. The horn is the feature that stands out most in that entry.
Checking the horn on official art
To tell them apart visually, compare the horn tips in the official artwork for each entry side by side. The description supports the rounded-versus-prominent contrast, but judging by colour alone is less reliable than comparing the shape of the horn in the official images.
Evolution paths
The two lines do not merge. Nidoran♀ evolves through Nidorina into Nidoqueen. Nidoran♂ evolves through Nidorino into Nidoking. If you are choosing one to raise, you are committing to one of these two separate lines rather than a single family that splits later.
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What the official entries do not settle
- Base stats: the official entries used here do not give a comparable base-stat breakdown for the two, so no claim is made that either is stronger.
- Game balance: how useful either Pokémon is in battle depends on the game and the ruleset being played, and neither is specified by the question.
- Game version: availability, move sets and encounter locations vary by title, and this article does not cover them.
The comparison above is based on official Pokédex records and descriptions. It does not reflect firsthand testing or personal gameplay experience.
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