lv 1-9?
I don't understand why people looks for lv 1-9 pokémon, especially legendary pokémon XD
I just checked my games, I have only a lv 21 growlithe, you can find'em on route 7,8,36,37 in heart gold.
If you have diamond, pearl or platinum you may find a growlithe on route 201 or 202 while fire...