Acrobatics just increases any physical damage you do. I haven't really made too many plans for the approach on how to handle their caves and "friendship" but there will likely be more than one approach, depending on the sort of relationship you want to develop with their pack. Also, their Alpha is going to be a heroine with her own quests and such.
At the moment, if you get defeated 20 times it should give you a "Chew Toy" title and they should no longer attack you, but I can't remember if it is fully implemented yet, it's been a while since I last checked.