If you ever noticed on your travels black dots around those are berries press A on a black dot to receive a berry. Also if you capture certain Pokemon they may be already holding a berry as well.
Piplup does not exist in Pokemon LeafGreen or FireRed.
You cannot catch houndour in Pokemon leafgreen either get one from Pokemon emerald or Pokemon colosseum.
That item doesn't exist in leafgreen.
You can't grow berries in Leafgreen, so get 6 meowth. (Pickup ability) battle low-level Pokemon, checking the party every now and then. If they don't have items already, Meowth have a chance of obtaining a berry for you after each battle.
Nowhere.
none. use the itemfinder in multiple locations in berry forest to find berries.
No, you cannot find cyndaquil in LeafGreen.
Piplup does not exist in Pokemon LeafGreen or FireRed.
you should go to gamestop
No. But you can find them in the ground. Poke'mon Master
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