The huge wild hog I hiked up to at Joyce Kilmer (NC) was the ugliest, meanest looking thing I've ever seen in the woods. The big arse 4 foot Timber Rattler we walked up to on top of Shortoff Mountain (Linville Gorge, NC) was a distant 2nd.
Oh, yea forgot the BACK woods guys cutting a logging road at the base of Shortoff Mt my Outward Bound group hiked into in 1981. My compatriots from Yankee land couldn't understand a word they said. But the water they offered me was really cold, really nice.