The Safari Zone if you place Rock or Forest objects in the Meadow Area. This can only be done after you obtain the National Pokedex.
If your riolu is following you in heartgold or soulsilver you can talk to it.
if you put it in 1st place
Rioulu is a baby Pokemon so it cannot breed with any Pokemon.
you have to beat drake form the elite 4
I think the fastest way to evolve rioulu is to put an exp share on him then go to Pokemon league and fight the Pokemon he will get tons of exp and he evolves into lucario at level 19 so it shouldn't take that long
it means a rioulu will hatch from it
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
Riolu is evolved when levels up with high happiness during daytime.
They are not in Pokemon HeartGold
where is the pokemon transfer lab in heartgold
No, but you can trade Pokemon only in HeartGold to Black