I love following and identifying tracks in the snow. There are some handy little field guides that help to learn just what made the tracks.
My guess is that you wouldn't want to venture out on the pond yet - those type of tracks usually indicate some slush on the surface, and the colors are not too healthy-looking either.
That is a cool picture and maybe worth going to the waters edge tomorrow and check it out more. As tom said that ice is thin so I wonder what that was.
The pond is definitely not thick enough for people to walk on. I actually looked around for a hole to see if whatever was walking across it fell in! I'll have to find one of those field guides, it would be nice to know what is wandering round back there.