Rattata is mouse-like, with large incisors and a whisker on both sides. Female Rattata have shorter whiskers than the males. The fur is purple, with a white or cream colored underside. Rattata have red eyes, with no obvious pupils. The tail is long, and curled slightly at the tip. Rattata have three-toed paws, which are the same color as its underbelly.
Rattata's teeth grow very quickly and they can survive almost anywhere. They also utilize their teeth so they can use attacks such as Super Fang and Bite.
Despite its classification, Rattata appears to be based off a rat, rather than a mouse.
Every Generation has a two-stage, Normal-type Pokémon to be found early in the game. Rattata is the one from the First Generation.
A Rattata has the ability to use the F.E.A.R tactic. A plan that can have a very low level Rattata beat any Pokémon (except Ghost-types). The Rattata holds a Focus Sash and has to know Endeavor and Quick Attack. The Rattata is attacked and would faint unless holding the Focus Sash which holds it to one HP. Rattata then uses Endeavor, making the Pokémon the move hit go down to one HP. Rattata then uses Quick Attack and unless the other Pokémon uses Quick Attack, Protect. Detect or a priority move Rattata will knock out the other Pokémon.
Names in other languages
Rattata is based on a rat. Rattata's name includes the words rat and possibly attack, considering its original name was going to be Rattatak. Koratta, the Japanese name, comes from rat and the prefix 小ko, meaning small.