Your dog can either be standing or can be lying on his back for this. Aside from your veterinarian, you may also want to consult with your local humane society for respected pet cemeteries in your area. If you are taking it from outside, avoid soil; organisms on the ground could make their way into your dog's fecal material, resulting in an inaccurate reading. Practicing such poor dog nutrition habits for your lovably pet can have serious effects on his health, energy, stamina, and overall sense of alertness.
Now that's a classic crossed-up signal, since it rewards the dog for her antisocial behavior; a more appropriate response would be a good sharp vocal and physical correction (more on those to come).
Since you are your dog's primary caretaker, it may sometimes become your responsibility to answer the following question: Is my dog suffering from extreme and irreversible pain and suffering so much so that his life is devoid of pleasure? For example, acute kidney dog disease could have been started and brought on by a significant drop in blood pressure or a heavy loss of fluids. If you can't bring yourself to be there, do not chide or accuse yourself of letting your dog down; it is very difficult to predict how one will respond to the death of a loved one.
Your veterinarian will be able to help you treat the underlying cause if that cause is accurately pin-pointed.