It evolves into Raticate at Level 20. If you can't stand the wait, you could catch Raticate at the Cinnabar Mansion (common) or the Bike road (uncommon).
It doesn't.
It will evolve at level 7.
Train it to level 25.
mine evolved at level 18
It evolves into pidgeot at level 36.
Rattata will evolve at level 20.
It will evolve at level 20.
it will evolve at lv. 20.
you have to trade it to evolve.
In Pokémon LeafGreen, Magnemite will evolve into Magneton at Level 30.
Level 31.
Level 38.
level 28
at level 40
level 26
at level 36
Level 32.