Eevee is a Normal-type Pokémon introduced in Generation I. It evolves into one of eight different Pokémon through various methods.
Eevee evolves into Vaporeon when exposed to a Water Stone
Eevee evolves into Jolteon when exposed to a Thunder Stone
Eevee evolves into Flareon when exposed to a Fire Stone
Eevee evolves into Espeon when leveled up with high friendship during the day
Eevee evolves into Umbreon when leveled up with high friendship during the night
Eevee evolves into Leafeon when leveled up near a Moss Rock or when exposed to a Leaf Stone
Eevee evolves into Glaceon when leveled up near an Ice Rock or when exposed to an Ice Stone
Eevee evolves into Sylveon when leveled up while knowing a Fairy-type move and having high friendship