Sadly, no. Unless you cheat with a Game Shark. Beware if you do that though, you game can fry out. Peace~
Sorry but its not possible without cheats.
you need both ruby and Sapphire to get there. :)
Growlithe is found in the Pokemon Mansion on Cinnabar Island in Pokemon Firered.
on cinnabar island
Beat the pokemon league.
There no Mew in firered.
you can get deoxys at birth island
in 1 island Pokemon center
On Cinnabar Island
On Birth Island
There is no island 9.
island 3