Diarrhea among dogs is a very common problem as they are not much aware about what to eat and what not to have. And although it sounds less panicking, it is a serious health problem. It demands great attention especially if it is severe or occurs frequently. Diarrhea is a symptom of dysfunction of the gastrointestinal tract. Among dogs, loose motion , vomiting, loss of appetite, and abdominal pain are common symptoms of Diarrhea. Causes of Diarrhea : Change in diet – A sudden change in daily diet can upset your dog’s stomach and intestinal tract, leading to diarrhea . Consumed spoiled food – U nder this situation your dog ate something that caused an upset stomach which is also referred as “garbage gut”. Bacterial infection and viral diseases - Dog's diarrhea could be caused by bacteria found in improperly cooked food or in decaying vegetables. Viral diseases such as Parvovirus and many rotaviruses also cause foul-smelling diarrhe