#0019 · Kanto · Generation 1

Rattata

Mouse Pokémon · Normal-type

Rattata is a Normal-type Pokémon, the Mouse Pokémon, number 19 (#0019) in the National Pokédex. It was introduced in Generation 1 and comes from the Kanto region. It is 0.3 m tall and weighs 3.5 kg.

Rattata is the Mouse Pokémon, a quick Normal type whose front teeth never stop growing, so it gnaws on everything to keep them short. The Pokédex says that spotting one means 40 more are certain to be living nearby.

How to pronounce Rattata

Rattata is pronounced ruh-TAT-uh. The capital letters show the stressed syllable.

Listen to Rattata said out loud:

In Japanese it is コラッタ (Koratta).

Hear every other name on the Pokémon pronunciation guide.

Lore

Biology

Rattata is a small rodent, 0.3 m tall and 3.5 kg, with purple fur, a cream face, paws and belly, big front teeth and a long tail curled at the tip; females have shorter whiskers.

Behaviour

Rattata is cautious in the extreme and keeps its ears moving to listen for danger even while asleep. It breeds so quickly that a pair can soon take over an area. If its teeth grow too long it cannot eat, so without something to chew it gnaws on door frames and table legs.

Habitat

The Pokédex habitat list says Grassland, and Bulbapedia says it settles almost anywhere that has food, even dirty places. In the games it is a common route Pokémon in Kanto and, in its Alolan form, in Alola.

Diet

Almost anything: the Gold Pokédex says it eats whatever it finds, and the Silver one says it scavenges all day.

Powers

Rattata learns Tackle, Quick Attack, Bite, Hyper Fang, Crunch and Sucker Punch, and has Run Away and Guts, with Hustle hidden. Alolan Rattata is a Dark and Normal type with dark grey fur: it reached Alola on cargo ships and turned nocturnal and urban to dodge the imported Yungoos, and has Gluttony, Hustle and the hidden Thick Fat.

Name origin

Rattata may combine 'rat' and 'attack', as its pre-release name Rattatak suggests, or echo 'rat-a-tat'. The Japanese name is Koratta (コラッタ), which may combine ko ('child' or 'small') and 'rat'.

Design inspiration

Rattata looks modelled on a rat or mouse. Alolan Rattata seems to be based on the black, brown or Polynesian rats that are invasive in Hawaii, and the mongoose brought in to control them explains the Yungoos link. These are fan readings.

Evolution notes

Rattata evolves into Raticate at level 20, but Alolan Rattata evolves into Alolan Raticate only at level 20 at night.

In the games

Rival Blue uses a Rattata in Cerulean City, and games often use one to teach catching, as in Yellow and the Johto games. It first appeared in Red and Green (Red and Blue outside Japan), and its Alolan form arrived in Sun and Moon. Bulbapedia lists it as unobtainable in Scarlet and Violet and in Legends: Z-A.

In the anime

Rattata debuted in 'Pokémon - I Choose You!', trying to steal food from Ash's backpack. Alolan Rattata and their Totem Raticate guarded a Darkinium Z from Team Rocket in 'A Team-on-Team Tussle!'.

Fun facts

• Before Generation IV, only Rattata and Raticate were known to learn Hyper Fang and Super Fang.
• Rattata was the Rat Pokémon before Generation III, when its category became Mouse Pokémon.
• In Pokémon Ranger, Rattata is among the easiest Pokémon to catch, alongside Magikarp, Seedot, Ninjask, Pichu and Goldeen: Bulbapedia says it needs only one loop.

Sources: Bulbapedia: Rattata (Pokémon) · Serebii: Rattata (Sword/Shield Pokédex; page not found in the Scarlet and Violet Pokédex)

Base stats

• HP: 30
• Attack: 56
• Defense: 35
• Sp. Atk: 25
• Sp. Def: 35
• Speed: 72

Rattata’s base stat total is 253. Its highest stat is Speed.

Type matchups

What is Rattata weak to?

Rattata takes extra damage from Fighting (2×) moves.

It is immune to Ghost moves.

Evolution

How does Rattata evolve?

Rattata evolves into Raticate (Level 20; Alolan Rattata: Level 20, at night).

The whole family: Rattata, Raticate.

Forms

• Alolan Rattata (Alolan form): Dark/Normal-type, base stat total 253 (HP 30, Attack 56, Defense 35, Sp. Atk 25, Sp. Def 35, Speed 72). Abilities: Gluttony, Hustle, Thick Fat (hidden).

Abilities

• Run Away: Ensures success fleeing from wild battles.
• Guts: Increases Attack to 1.5× with a major status ailment.
• Hustle (hidden ability): Strengthens physical moves to inflict 1.5× damage, but decreases their accuracy to 0.8×.

Moves

Moves Rattata learns by level up in Ultra Sun / Ultra Moon

TM moves (29)

Rattata can learn 29 moves from TMs in Ultra Sun / Ultra Moon: Work Up, Toxic, Hidden Power, Sunny Day, Taunt, Ice Beam, Blizzard, Protect, Rain Dance, Frustration, Thunderbolt, Thunder, Return, Shadow Ball, Double Team, Facade, Rest, Attract, Thief, Round, Charge Beam, Thunder Wave, Grass Knot, Swagger, Sleep Talk, U-turn, Substitute, Wild Charge, Confide.

Egg moves (11):Bite, Counter, Final Gambit, Flame Wheel, Fury Swipes, Last Resort, Me First, Revenge, Reversal, Screech, Uproar.

Move tutor moves (10): Covet, Endeavor, Icy Wind, Iron Tail, Last Resort, Shock Wave, Snore, Super Fang, Uproar, Zen Headbutt.

Breeding & training

• Gender: 50% male, 50% female.
• Egg groups: Field.
• Egg cycles: 15 (steps to hatch, Scarlet/Violet: 1,920).
• Catch rate: 255 out of 255.
• Base friendship (Gen 8 onward): 50.
• Growth rate: Medium (1,000,000 experience points to reach level 100).
• Defeating it gives 1 Speed effort value.
• Base experience yield: 51.

Pokédex entries

Will chew on anything with its fangs. If you see one, you can be certain that 40 more live in the area. (Let’s Go, Pikachu!, Let’s Go, Eevee!)

This Pokémon is common but hazardous. Its sharp incisors can easily cut right through hard wood. (Ultra Moon)

Its incisors grow continuously throughout its life. If its incisors get too long, this Pokémon becomes unable to eat, and it starves to death. (Ultra Sun)

With their strong capacity for survival, they can live in dirty places without concern. Left unchecked, their numbers multiply rapidly. (Moon)

Its incisors continue growing until its death. If its Trainer doesn't offer it a file to gnaw on, it will gnaw on door frames, table legs, and so on. (Sun)

Rattata is cautious in the extreme. Even while it is asleep, it constantly listens by moving its ears around. It is not picky about where it lives - it will make its nest anywhere. (Ruby, Sapphire, Omega Ruby, Alpha Sapphire)

Names around the world

Trivia

• Taller than 4% of all Pokémon (0.3 m).
• Heavier than 11% of all Pokémon (3.5 kg).
• Base stat total 253, ranked #964 of 1,025.
• One of 131 Normal-type Pokémon (counting dual types).
• One of 87 purple Pokémon.
• Number 19 of 151 Pokémon introduced in Generation 1 (Kanto).
• Part of an evolution family of 2 Pokémon.
• Can learn 58 different moves in Ultra Sun / Ultra Moon.
• Catch rate 255: about 33.3% per Poké Ball at full health.
• Has 1 alternate form.
• Appears in 15 distinct Pokédex entries.

Sources and fact-checking

• Stats, types, abilities, moves, evolutions, forms and Pokédex entries: PokéAPI open game data.
• Lore: written by pokee.si in our own words, researched from Bulbapedia: Rattata (Pokémon), Serebii: Rattata (Sword/Shield Pokédex; page not found in the Scarlet and Violet Pokédex).
• Pronunciation (ruh-TAT-uh): it follows how the English anime, games or official videos say it.

Last checked: 19 October 2026. Every sentence of the lore was checked against Bulbapedia, Serebii and the game data.

Explore

Normal-type Pokémon · Kanto region guide · Run Away ability · Guts ability · Hustle ability · Compare Rattata · Full Pokédex · Type chart · All moves

Browse similar Pokémon

Gen 1 Normal-type Pokémon · Gen 1 Pokémon list · Purple Pokémon list · Field egg group · Pokémon that start with R · Mouse and Rodent Pokémon

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