If there are werewolves in Skyrim you should be scared to travel outside. I think some werewolves should be posted on the sides of the roads waiting for unsuspecting people. You should also be able to see a NPC get attacked by a werewolf also.
And when your traveling through a forest in the middle of the night, vampires would pretend to be innocent civilians that say "they lost their way" to where ever they were going,so they give you a quest to escort them back home and they stay behind you the whole time, and eventually they will push you down to the floor and hold your wrists so its harder to fight back and they are also trying to bite your neck. The higher your strength is the easier it is to push him of. The higher your agility is the easier you can slip from his grip. And the higher your intelligence is...I have no idea =( lol.
Well thanks for reading!