I've just started my new playthrough and guess what? Yep, CTDs practically every time I get to those damned wolves south of Riverwood! I can't remember, are they a part of vanilla Skyrim, or are they added by a mod? All I know is it's practically a dead cert that I'm going to have a CTD as soon as I come in contact with them! The only time I got past them it locked up almost straight after! I understand that the area is notorious because it's got a built in fault with areas in the map all trying to load at once?