Take my beloved Celeste (Collie), for instance. Leave her alone in the house while you make a quick trip to the store, and she would pick a room a smother it in poop. Or my beloved Ewok (Shepherd). Move her to a new house, and she just rips out all of the window screens. Twice. Bring her in because it is late autumn and because you have a different house and the cat has a different hairdo or something, giant piles of dog doo. As in more than you'd expect from a cow.
The best advice I can offer: Next time go save a smaller dog. Smaller dog = smaller messes, but not necessarily a better experience. (I'm kidding there. I am sworn to save all dogs and cats that need it and approach my doorstep.)
It is nerves. Perhaps a vet can help with sedatives, but there are side effects from those as well. Like when I take antibiotics.........well, never you mind.
