Where to find Caterpie in HeartGold & SoulSilver

• Ilex Forest — Headbutt, Walk
• National Park — Walk
• Route 2 — Walk
• Route 30 — Walk
• Route 31 — Walk
• Viridian Forest — Walk

Caterpie in every game · Johto & Kanto interactive map

By game: Pokémon HeartGold map · Pokémon SoulSilver map