Stomach Bug 2024 Symptoms In Dogs. The most common symptoms of norovirus are diarrhea, vomiting, stomach pain, and nausea. Intestinal virus (reovirus) infection in dogs is a contagious illness caused by a virus from the reoviridae family, leading to severe stomach and intestinal suffering by.
But in dogs, the cause can vary greatly from humans. Gastroenteritis in dogs typically starts with soft stool that becomes progressively wetter.