User blog comment:El Asesino/Werewolves...Where are they/@comment-5790858-20130412222840

If you're looking to become a Werewolf, you need to join the Companions in Whiterun. You can also encounter one in the Daedric quest for Hircine that starts in the Falkreath Dungeon. If you have Dragonborn, you can find a pack of them hiding in a mountain somewhere. As for random encounters, I have yet to randomly encounter any that way.