As a Pokémon expert, I can tell you that Rattata does not evolve into another Pokémon through the standard leveling process. Instead, Rattata has a variant called Raticate, which it can evolve into under specific conditions. In the original games and subsequent generations, Rattata evolves into Raticate when it is traded with another player. There is no specific level at which this happens; the trade is the trigger for the evolution.

read more >>

Rattata (Japanese: ����å� Koratta) is a Normal-type Pok��mon introduced in Generation I. It evolves into Raticate starting at level 20. In Alola, Rattata has a regional variant that is Dark/Normal. It evolves into Alolan Raticate when leveled up at night starting at level 20.read more >>