I'm not even sure you can get one in White but I think it's possible that you can find one in White Forest. Are my suspicions true?
The only way to get Growlithe is through migration or Dream World. You can get one in the Dream World in Pleasant Forest at over 7500 dream points.
No you can't find a Growlithe in White Forest
How to change your username
How to add a user avatar
Why was my post hidden?
Flags vs Downvotes
Official PokemonDb League
Type a Pokemon name, type, move or ability to see instant results.