obamasnow
No I don't think they do.
yes
In Pokemon Battle Arena, Pokemon only compete in battles and contests. However, they do not gain EXP or level up.
it evolves at lv. 30
I do not have Pokemon Arena, but in the other Pokemon games Baltoy evolves at level 36 into Claydol. Hope this helps! Master
mareep evolves at level 15 then at level 30 in Pokemon crater
Im not sure but I think it evolves at level 35 or 36
AnswerI'm not quite sure what Pokemon Battle Arena is (Pokemon Battle Revolution?), but Pichu does not evolve at a certain level. Like the majority of the Baby Pokemon, Pichu evolves once it's happiness is high enough and then Leveled up.
to get the rainbow rapidash you have to get a rainbow ponyta and evolve it. it evolves at level 50.
It depends on which Pokemon it is. If you have a Mudkip, it evolves into Marshtomp at level 16. Marshtomp evolves into Swampert at level 36. If you have a Beldum, it evolves into Metang at level 20. Metang evolves into Metagross at level 45. Hope I helped.:)
Pokemon battle arena is better than Pokemon league.
Growlithe evolves into Arcanine via Fire Stone. They can be bought at the PokeMart.