In Pokémon Legends: Arceus, you will be able to evolve Sneasel into two different options, which are needed to complete the Pokédex. However, acquiring one of the forms is slightly more complicated than the other and requires you to use a new mechanic introduced in Legends: Arceus. Sneasel can evolve into either Weavile or Sneasler, but both require an item to initiate the evolution. To get one of the evolutions, you will also be required to catch a Hisuian form to complete both evolutionary lines.

You find Sneasel's Hisuian form in a few areas, notably Coronet Highlands and Alabaster Icelands in Pokémon Legends: Arceus. It is a bit tricky to find Sneasel in these areas; however, if you require specific locations, you can find the Pokémon in Celestica Trail, Primeval Grotto, Avalugg's Legacy, and Glacier Terrace sub-regions. Once you have caught a Sneasel, you will need a Razor Claw to start its evolution.