You can't really find it anywhere, because it's not a TM or an HM. Multiple Pokémon learn it though.
Piplup does not exist in Pokemon LeafGreen or FireRed.
there is none
You cannot catch houndour in Pokemon leafgreen either get one from Pokemon emerald or Pokemon colosseum.
That item doesn't exist in leafgreen.
Nowhere.
Get another from leafgreen or another firered or get one from Pokemon colosseum.
No, you cannot find cyndaquil in LeafGreen.
Piplup does not exist in Pokemon LeafGreen or FireRed.
you should go to gamestop
there is none
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.
you can't catch aipom in leafgreen but you can get one from Pokemon colosseum or Pokemon emerald.
it's in pokemon leafgreen