The pre-death symptoms of kidney failure in dogs include poor energy, loss of appetite, vomiting, lethargy, inability to walk, or no urine discharge. When a dog shows these symptoms, it means that it has reached an advanced stage of the disease and is relatively easy to treat. Death occurs. It’s best to pay more attention to your dog’s diet. Don’t feed your dog food that is too oily or salty, and let your dog drink more water.