No you cannot catch Larvitar in Pokémon Emerald.
mt.silver
45, same as Larvitar's catch rate.
Not naturally, no.
In order to get Larvitar in Pokémon HeartGold, you have to find it and catch it in Mt. Silver or in the Safari Zone.
you can catch a larvitar on route 206 if dawns sister says you can.
to find larvitar go to the Seavault Canyon
No you cannot catch Larvitar in Pokémon Emerald.
mt.silver
u cant catch it in the wild you have to catch a larvitar level it up to level 55. You can catch a larvitar after u beat the elite 4.
45, same as Larvitar's catch rate.
Not naturally, no.
In order to get Larvitar in Pokémon HeartGold, you have to find it and catch it in Mt. Silver or in the Safari Zone.
You get it in Mt.Silver (Rare)
You can catch larvitar i Pokemon FireRed and Pokemon LeafGreen,but most people uses a gameshark.
doggy biscit
You can catch a larvitar in emerald in any river as long as you choose the right bait and are full of patience. They are very tricky to work with so you must be keen and alert