The MGM Groundhog??
As we were finishing lunch this Woodchuck (I decided to stick with woodchuck and not groundhog since we were in the woods) cam ambling down the trail.
He rooted around near the stream for a while then walked past us and started digging behind the shelter.
He was for the most part completely oblivious to our presence.
Yeah, I know, they're pretty common, but we had never been so close to one for so long; it was really kind of neat.