Yamper (Japanese: ワンパチ Wanpachi) is an Electric-type Pokémon introduced in Generation VIII.
This Pokémon is very popular as a herding dog in the Galar region. However, this gluttonous Pokémon only assists people with their work because it wants treats. As it runs, it generates electricity from the base of its tail which makes it crackle.
It evolves into Boltund starting at level 25.