Nidoran♂ is a small, rabbit-based Pokémon with large ears, whiskers and front teeth. They are covered with spines, primarily on their back, which can release potent poisons if Nidoran♂ is threatened. Nidoran♂ have a larger forehead horn than their female counterparts, Nidoran♀. It has darker spots all over its body.
Its large horns can secrete a powerful venom, unlike its female counterpart, the size of the horns is indicative of the strength of the venom. It also has unique muscles around its ears, which permit them to be moved in any direction.
Nidoran♂ evolves into a Nidorino at level 17.
In the anime
Nidoran♂ with its counterpart, Nidoran♀, were featured in the episode Wherefore Art Thou, Pokémon? . A young boy named Ralph owned a Nidoran♂ which evolved into a Nidorino after kissing his friend Emily's Nidoran♀.
|Red/Blue||Route 22, Safari Zone|| Common (Red)|
|Yellow||Route 2, 9, 10, 22, Safari Zone||Common|
|Gold/Silver||Route 35, 36||Common|
|Crystal||Route 35, National Park||Common|
|FireRed/LeafGreen|| Route 3, Safari Zone areas 1, 2, and 3 (FireRed)|
Route 3, Safari Zone areas 1 and 3 (LeafGreen)
| Common (FireRed)|
|Diamond/Pearl||Route 201 (Poké Radar)||Rare|
|Platinum||Route 201 (Poké Radar)||Rare|
|HeartGold/SoulSilver||Route 35, 36||Uncommon|
|Black/White||White Forest (White only)||Uncommon|
Side game locations
|Pokémon Trozei!||Secret Storage 4, Huge Storage 4, Endless Level 5, Mr. Who's Den|
|Red Rescue Team & Blue Rescue Team||Mt. Thunder (1-4F), Wish Cave (33-37F), Oddity Cave (1-4BF)|
|Explorers of Time & Explorers of Darkness||Mystifying Forest (1-13BF), Mystery Jungle (1-29BF)|
|Pokémon Rumble||Eternal Tower|
Main article: Nidoran♂/Learnset Generation I
Nidoran♂'s name may be based on the word needle. It may also be based from the word cnidarian which are stinging animals. Alternatively, it may be based on 二 ni, two, or 二度 nido, two times/two degrees, referring to there being two distinct evolutionary lines using the name with similar names and traits. The ♂ in its name is an indication of its male gender.
- Despite genders not being in Generation I, Nidoran♂ and Nidoran♀ were still separate Pokémon.
- Nidoran♂'s shiny form appears to be the coloration of Nidoran♀.
- Nidoran♂ is one of the eight Pokémon with a non-alphabetical character in it along with Mr. Mime, Mime Jr., Ho-oh, Nidoran♀, Porygon2, Porygon-Z, and Farfetch'd.
- In official art, Nidoran♂ is colored purple, yet in the anime it is colored pink.
- Pokémon.com Pokédex
- Serebii.net Pokédex data
- Legendary Pokémon data
- The Pokémon Database
- Pokémon Dream Pokédex data
- Psypokes Psydex data