Whoa...just saw this thread!! Your a lucky dude! The lil' fella looks fairly young, as mountain lions cranium will broaden and the snout becomes less pronounced with age. Probably just checkin' you out. If he had a proper stalk going on, well, you would never know what hit you! And yes, head and neck area is the target, (as with all cats). I moved back east from Colorado twenty or so years ago and they were really becoming a problem there back then. I know one thing, I'm sure you never felt more alive or so small in the face of Nature's grandeur!! As for "kill'em and eat'em", well, thankfully for humans, apex predators don't have a "Stand your ground" laws!! Nothing against hunting,(love meat off the cloven hoof), nor guns,(Design and Engineering of firearms is amazing) just the cavalier attitude expressed by some. Truly an AWESOME experience, relish it.