I heard once that people in India protect themselves from Tigers by wearing masks on the back of their head when walking through the jungle. Tigers only attack if they think you can't see them coming, they say. I must have thought I was going to need that information some day because I still remember it over fifteen years later. I have not yet been to India, and I've not yet been stalked by a tiger. At least, I assume so; I've never worn a mask on the back of my head.