You have to train them a lot, or use Rare Candies.
Poochyena is a dark type of Pokemon. In Pokemon Emerald it will evolve if you raise it up to level 18.
you train them
You level a Pokemon up.
The easiest way to level up is to feed Pokemon Rare candies.
Victory road
In the game you have to battle alot of Pokemon till your Pokemon level up.On a pokewalker a hundred steps is a level up,but your Pokemon can olny level up one.
Well you can't catch level 100 wild Pokemon in emerald, so get up and start training if you want a level 100
To get a Pokemon level up quickly is to have a Pokemon hold exp. Share and then just battle a bunch of trainers or wild Pokemon.
in elite 4.
train some electric Pokemon or just level up your Pokemon loads
There really isn't much you can do with it. You can level up some other mon to lvl100
You can get a level one hundred Pokemon in HeartGold the same way that you can get a Pokemon of that level in other games. You have to level them up until they reach it.