Sneasel (Japanese: ニューラ Nyula) is a dual-type Dark/Ice Pokémon introduced in Generation II. It evolves into Weavile when leveled up holding a Razor Claw during the night.

What level does Sneasel evolve?

Do this enough times and you'll see Sneasel evolve into Weavile, who is a bit more powerful than his clawed predecessor. Thankfully, there's no level requirement here; you can evolve Sneasel into Weavile at any level.

Where do you find a razor claw in Pokemon Diamond?

Find a Razor Claw in Diamond, Pearl, and Platinum.

Route 224 - Surf off of the southern beach along the middle of the route and head south. Follow the rocks down and you'll come across a small patch of land. You'll be able to find the Razor Claw here.