I have been told that the dog is not there anyway. The story I heard at Scampton many years ago was that there had been several attempts to locate the grave but all had failed (many after dining in nights)...the railings were put round to prevent any further excursions into the dark armed with a spade
The story I heard when I was there was that the dog was never buried outside Gibson’s office at all, the 2 erks detailed to so just threw him over the hedge on the other side of the A15, disturbed the soil and said they’d done it. It seems the dog was none too popular as it was allowed to roam freely (how it ended up dying) leaving it’s mess everywhere which they had to clear up.