is the dog in the house bud??
it is casso, do you think that makes a difference?
has the dog been overly stimulated and played with regular in the house,,?
the reason i ask this is because dogs make associations with states of mind and certain environments,
for example a dog who's used to hunting and free running makes the association between going into fields and playing and running, now if you one day in the field put a lead on him and confine him , it wont be long before he starts the let you know all about it by whining and generally feeling distressed,
its the same with your pu