36 I believe
36
Joltik, the Bug Electric pokemon, evoles at level 36 into Galvantula, no items needed.
If u mean jolteon, then it doesn't
To evolve Mantyke in pokemon black/white 2 you have to level it up with a remoraid in your party then it will evolve into mantine
Level 43
Level 64
Throh don't evolve in Pokemon Black and White.
Audino doesnt evolve in Pokemon black and white
Level it to 41 and it will evolve
Virizion does not evolve.
watchog does not evolve
Raticate can not evolve, it is a fully evolved pokemon.