Redd's behaviour has gotten so much better. He is a different boy to when we got him. Most of all he no longer growls at or bites Tom, such an improvement. Redd gets of furniture when told to rather than growls at Tom. But he is still a little defensive about his stones when bringing them home. He will give just a little growl but it is not a really threatening one, no bared teeth to go with it. We accept that and warn others usually children not to touch his stone even when he drops it as he will snatch it if any tries to take it. He might inadvertently nip them. Yet once the stone is in the house he loses interest in it. We gather all the stones and rocks, sometimes quite large ones, and take them back to the beach and/or the burn.
Redd is still a little bit of a handful, plenty of time to improve.