Jigglypuff is located in the trophy garden.
it evolves to jiggly puff
you can only catch them in the mansion and you can breed a jiggly-puff to get one
You might find it in the Trophy Garden if that is the Pokemon of the day.
Jiggly puff does not evolve at a level, but by using the moonstone.
In route 3 in the grass there are Jiggly Puffs
In safari zone
jiggly puff
Route 115
Route112
i believe you have to do 350 Brawls
350 matches in brawl--Nobody
You use a Moon Stone.