Addiction is a chronic brain disease that induces compulsive activity, despite health, social and legal consequences. A person may seem to make a voluntary choice to try a drug or begin a type of behavior, but a variety of genetic and environmental factors influence those decisions.
Expert: Theresa replied 8 years ago. Symptoms of a dying dog include, lack of appetite, pale, blue, or gray gums, dry gums, inability to stand, dilated pupils, difficulty breathing, unresponsiveness, and neurologic symptoms. A dog can live for a couple weeks without enough food and water.
Heart Disease. Coughing can also be a sign of heart disease in dogs. Other signs of a heart problem include a bluish tinge to the tongue, loss of appetite, fatigue, weakness, decreased exercise endurance, a too-fast or too-slow heartbeat, and increased respiratory effort.