If your fiddling with your camera, studying one scene too long without looking around much, dozing off, or your hiking up a hill a little to quietly, this could happen...

You turn around and there's a Bison (or some other wild animal) right behind you and not to happy about you being there.  I promise your going to surprise yourself in how fast you can really move or what you consider climbable.  I did, lucky for me there was a car with enough clearance for me to slide under.  He charged and grunted and hooved at the ground. Mad that I decided to share it with him.  This guy definetly wanted nothing to do with having his photograph taken.  Well I had my digital camera with me and figured that as long as I wasn't going anywhere and he couldn't get to me I might as well take some pictures.  So this is what I ended up with.

Lesson learned always keep a watchful eye!