Things You'll Need
Instructions
Head west from Mt. Coronet or leave Oreburgh City through the north gate to reach Route 207.
Stand in the grass on Route 207 and open the Key Items list. Use the PokéRadar item. Touch any grass patch that shakes, and a wild Pokémon appears. Touch grass patches until a Larvitar confronts you.
Capture the Larvitar with any Poké Ball. If you injured the Larvitar during your battle with it, go to the Pokémon Center in Oreburgh City to heal it.
Set Larvitar as your team's lead Pokémon. When you battle with it, Larvitar receives experience points. It levels up when the Experience meter fills completely.
Fight with Larvitar until it reaches level 30. After your next battle, Larvitar evolves into Pupitar.