Where can I find Ho-Oh in FireRed(other questions below!)?

Question

2.Where can I find Mew in FireRed?
3.Where can I find the other Legendary Dogs?
4.How do you get Shiny Legendaries?

Answer 1

1:Going to a Nintendo Special Event
2:Going to a Special Nintendo Event
3:Playing through Coliseum or trading
4:Chance, chance, chance