Where to catch Slakoth

In Paldea (Scarlet & Violet)

• South Province (Area Five) — Walk
• South Province (Area One) — Walk
• South Province (Area Three) — Walk

In Blueberry Academy (Scarlet & Violet – The Indigo Disk)

• Coastal Biome — Walk
• Torchlit Labyrinth — Walk

In Hoenn (Ruby, Sapphire & Emerald)

• Petalburg Woods — Walk

Slakoth — full Pokédex entry