Larvitar is exclusive to DP. You can either Trade for one, or you can migrate one.
level him up to level 30
mt. silver and you can rarely get it in Safari Place. x
You need to evolve Lavitar to get a Pupitar at level 30 in Pokemon Diamond. Lavitar can be found on route 207 in the game.
One way you can get lavitar is by trading from Diamond or Platinum or other games or you can also get it by Lucas' sister in Sandgem Town and wait until swarms come it might take a while for it to happen but its possible. Don't worry.
no you can't find a torchic egg in Pokemon platinum
level him up to level 30
lucas/dawn little sister at some point will tell you she saw lavitar on news at route 206
yes just beat the game and go to dawns house and tal to her little sister every day until she tells lavitar and what route to find it on
you can't
Yes you can find it at nightime.
You can find it at Faldera Volcano.
yes you have to do the Pokemon league
You have to Trade it from fire red or leaf green.
it can evolve gligar into gliscor if u give it to the gligar and use a rare candy. you can find a gligar in rout 206 from orenburg city lavitar is also located there ^^
Mt. Silver. Lavitar is around level 20!
Larvitar can be found at Mt.Silver, you access this place when you have defeated the Pokemon League.
mt. silver and you can rarely get it in Safari Place. x