you need to have badges such as:rainbow badge makes all Pokemon up to lv 50 obey you.
You can find high leveled Pokemon at sky pillar and victory road.
it all depends on the Pokeball, HP, level, and the Pokemon for example, normal Pokeball - Low chance on a high leveled pokemon, but good on a low leveled pokemon Greatball - Really good on low leveled pokemon, but pretty decent on high leveled ones Ultraball - GREAT on low levels, really good on high levels Masterball - 100% also, with the Generation IV new pokeballs, it depends on time, location, and times captured(Repeat Ball)
Depends on the level it started with. If it is low leveled it will level up more than if it is high leveled. If it is high leveled it might not level up at all.
High leveled Pokemon are in the victory road and there are also a couple in the safari zone near lilcove city : ) Hope this helps
36 or higher, but it will be hard to be high leveled if you're using many Pokemon.
if u mean black and white then just find audino's in shaking grass
go to the sky pillar u get high leveled Pokemon and also a rayquaza up for grabs
Yes, Togepi evolves into Togetic when leveled up with high friendship.
No, all you need is a Pokemon that knows surf, and a mach bike. You might want good Pokemon because there are a lot of high-leveled Pokemon.
the place with the highest leveled ponytas is the route under veilstone
Chingling must be leveled up at night with high happiness to become Chimecho.
Riolu becomes Lucario when it is leveled up during the day with high happiness.