Yeah, could have been a dog. I would say a dog with a human and we just didn't see the person's tracks is more likely than escaped though as we were miles from the nearest house and I think an escaped dog would have had the sense not to walk half way up High Street by itself in that weather. One thing about these prints is they were very clean though. This looked like something that was walking, as opposed to bounding this way and that like a dog sometimes does. All pure speculation of course, but with a dog + human I would expect them to be either walking together, or for the dog to be running around chaotically, still fairly close to the person.