If you thinking about getting a 2 star wolf you may have to look for many nights if your playing solo before finding one.
But may be easier if you invite some friend to play with you.
Myself was ok with the one star wolf sins they deal alot more damage and are more resistant to damage from the normal ones so at say. I also have notice the wolfs die very easy from poison . So going into swamp with wolfs is not so good or plains for that matter even though they can help alot if you having a hord of wolfs when melee a fuling village.