Wolves
Since when do wolves attack humans? I saw a documentary by a wolf expert who
said the chance that wolves attack you is pretty slim because they're afraid of humans. If they do, you would only need to shout and lift a branch and they would run for it.
http://newswatch.nationalgeographic.com/2012/02/03/would-real-wolves-a ct-like-the-wolves-of-the-grey/
http://www.livingwithwolves.org/AW_question1.html