Go in the cerulean city gym.
she is in cerulean city. her Pokemon are as follows: staryu and starmie they are going to use water pulse this question was a waste of my time play the game and you will find out
You may have to train your Pokemon to at least level 20 or use a electric type like pikachu you can catch it in viridian city but its rare to find.
You need the second badge which is obtained by beating cerulean cities gym leader misty.
Piplup does not exist in Pokemon LeafGreen or FireRed.
No, you cannot find cyndaquil in LeafGreen.
you should go to gamestop
(Sorry i though for a second you said "Why do you have to find Misty") (This question needs to be improved)
LeafGreen version does not have Growlithe.
In the grass...
You cannot catch houndour in Pokemon leafgreen either get one from Pokemon emerald or Pokemon colosseum.
there is no such Pokemon
That item doesn't exist in leafgreen.