You can't catch feraligatr in leafgreen you need to get a croconaw from Pokemon colosseum or get a totodile from emerald or Pokemon xd gale of darkness either way you must train both to get feraligatr.
Yes you can trade leafgreen version Pokemon to another leafgreen version.
Norman is not in leafgreen.
Firered and leafgreen both can catch different Pokemon but there pokedex is the same, here is some examples: magmar only in leafgreen not firered, oddish in firered not leafgreen, ekans in firered not leafgreen, bellsprout in leafgreen not firered, pinsir in leafgreen not firered.
in leafgreen u have to get it from a Nintendo event and in sapphire after u get it in leafgreen u trade it from leafgreen to sapphire
The lottery is not in leafgreen.
Shuckle is not available in Leafgreen. You will need to trade one from Emerald to Leafgreen.
There aren't growlithe in LeafGreen. FireRed has growlithe, LeafGreen has vulpix.
the lottery is not in leafgreen.
You can't get it in leafgreen.
You can't on leafgreen.
Yes.
you cant get toros on leafgreen you need to catch one on firered and trade it to leafgreen