u can't catch it,
you must find it in celadon city.
you must walk on the sneaky road next to the pokemon center, and enter the big building from behind. than you just walk up and loot the pokeball wich contains eevee.
you can get a shiny Eevee on Pokemon leafgreen but its rare. its about a 1/5000 to get it
you need to trade from Pokemon leafgreen or firered
Unfortuanlty, no. Eevee can only evolve into three different Pokemon in Leafgreen- Vaporeon, Jolteon, and Flareon. Hope this helps. -Mewtwometwo
You can't catch eevee as a wild pokemon, but you receive on the roof of the Celadon Mansion(you have to go through the back way, going through the front will take you the wrong way)
You can't leafeon doesn't exist in leafgreen.
You can not catch it in leafgreen,but in firered you can.
You can get Eevee in the topmost room of the back of the building where you get the key item TEA.
nothing,i think
Eevee is not available in Pokémon Sapphire. Eevee is available in Pokémon FireRed and LeafGreen and you may be able to trade it from LeafGreen or FireRed to Sapphire.
You can't actually catch it. You go to Celadon City. There is a door behind the Celadon Mansion where you got the tea from the old lady. Go up the stairs and there will be a room. there is a PokeBall. It is a Eevee.
you don't catch eevee you have to go to celadon city and go tot the mansion but use the back entrance or else you cant get eevee and eevee will be in a poke ball on the table
the only way to get eevee in diamond or pearl is by trade or you can migrate it from leafgreen and firered. sorry=l