First put fire red in the bottom slot of your DS then search around or use the poke radar
To be honest the poke radar is quicker so you might wanna use that.
Hope this helps!
You don't need from Shiny Poke-radar!
I think everybody knows that. So i do not know why you made this thread. To know where and what you need to catch a growlithe You can just look it up on another site
As mentioned, this is pretty much common knowledge. Even if someone did not know, PC's FAQ lists Pokemon locations. Besides, there are other sources on the net. As there is no discussion here...