Taillow locations — where to catch

In Johto & Kanto (HeartGold & SoulSilver)

• Cherrygrove City — Headbutt

In Hoenn (Ruby, Sapphire & Emerald)

• Petalburg Woods — Walk
• Route 104 — Walk
• Route 115 — Walk
• Route 116 — Walk

Other games (2)

• Omega Ruby / Alpha Sapphire (Gen 6): Hoenn Route 104, Route 115, Route 116, Petalburg Woods, Soaring in the sky
• X / Y (Gen 6): Kalos Route 8

Taillow — full Pokédex entry