Seriously. I don't think there's any need for that. I killed a chicken in Riverwood with my bow and the next thing you know all the guards were trying to kill me. They did in fact kill me. Harsh that is.
Exact same thing happened to me haha... it was a harsh reality check really, I liked it... it was like,"Oh of course they would be pissed off if I launched an arrow right at their feet headshotting their chicken."
I just went to an autosave, because they wouldn't stop being mad at me haha... And I wanted to redo that, b/c I was just messing around really.