(dim wit) You can't catch them in Pokemon Leaf Green because Leafeon and Glacieon was discovered in the Sinnoh region (Diamond, Pearl, and Platinum).
firered and leafgreen version
NO!! you can caught it on other version like a Pokemon hack
You must trade it from Pokemon firered or Pokemon leafgreen
Growlithe can't be caught in leafgreen so have a firered version trade you one.
Vulpix is an exclusive pokemon to Leafgreen version if you trade one from Leafgreen to Firered you will be able to have it.
Yes you can trade leafgreen version Pokemon to another leafgreen version.
there are 5 legendary Pokemon in leafgreen version
LeafGreen version does not have Growlithe.
firered and leafgreen version
its only available in Pokemon leafgreen version sorry
lavender town
You cannot catch aipom in leafgreen however you can in emerald or Pokemon colosseum.
yes you can trade pokemon leafgreen pokemon to pokemon emerald version same as pokemon fire.
Gligar is a flying and ground type of Pokemon. The only way to get this Pokemon in LeafGreen version is to trade for it.
It is not possible to catch a Sunkern in Pokemon LeafGreen version. The only way to get one is to trade for it.
lavender town.
By trading across from either Pearl, Diamond or Platinum version