The best place and time to find growlithe is at route 7 in the day time. Once you have caught Growlithe, you can evolve him into Arcanine with a fire stone.
Hope I helped!
Growlithe is one of the "version-specific" Pokemon. Growlithe is only available in HeartGold, while in SoulSilver you can only get Vulpix.
It is very rare, because you can only get Growlithe on certain games like FireRed and HeartGold. You can't get Arcanine directly, it has to be evolved using a firestone on Growlithe. You can't get Growlithe on Emerald, LeafGreen, Diamond, Pearl, Platinum or SoulSilver.
Growlithe cannot be found in Pokemon SoulSilver, not even in the Safari Zone. It can only be found in HeartGold.
Growlithe evolves only with a Firestone, becareful I've heard rumors it no longer learns moves after evolving.
you can catch growlithe in Pokemon mansion on cinnebar island.You can catch growlithe on route 7 and route 8. Hope this helps.
growlithe is in route 36,37,48
Growlithe is only found in Heartgold Version.
you can catch a growlithe at route 37.
heartgold but you can get vulpix in soulsilver
Growlithe evolves when you give it a fire stone
Growlithe learns Flamethrower at Level 35
Fire stone
Growlithe evolves into Arcanine when you give the Pokemon a fire stone.
Fire stone
Growlithe is a heartgold exclusive like vulpix is for soulsilver so your gonna have to trade to get one.
In front of goldenrod and the safari zone In heartgold.
link trade from heartgold