I damn near have a heart attack every time one of those 200 lbs. squirrels comes sneaking up on me when I'm on stand during deer season. I swear it's Buckzilla paying me a visit to get my pacemaker going!
Years ago (I was around 17) I was positive a big 'ole buck was sneaking up behind me, my heart was racing and I was in full anticipation mode, all of the sudden the buck started moving very fast and a freaking black squirrel ran across my legs!
I schit my pants!