Avalugg locations — where to catch

In Lumiose City (Legends: Z-A)

• Wild Zone 12 — Walk, Static Encounter

In Paldea (Scarlet & Violet)

• Casseroya Lake — Walk
• Dalizapa Passage — Walk
• Glaseado Mountain — Walk, Static Encounter
• North Paldean Sea — Walk
• North Province (Area One) — Walk
• North Province (Area Three) — Walk
• Socarrat Trail — Walk
• Tagtree Thicket — Walk
• West Paldean Sea — Walk

In Hisui (Legends: Arceus)

• Avalugg's Legacy — Walk

Other games (2)

• Sword / Shield — The Isle of Armor (Gen 8): Frigid Sea, Giant's Bed, Insular Sea, Three-Point Pass
• Sword / Shield (Gen 8): Dusty Bowl, Giant's Cap, Hammerlocke Hills, Lake of Outrage, Stony Wilderness, Giant's Seat

Avalugg — full Pokédex entry