What’s wrong with puppies throwing up and having diarrhoea?

There are many causes of vomiting and diarrhoea in puppies. Viral diseases (canine microvirus, canine coronavirus and distemper virus enteritis type) should first be ruled out in dogs that are unvaccinated or have incomplete vaccination. Some parasites such as Trichomonas foetus, Giardia lamblia and Coccidia can also cause vomiting and diarrhoea. Some gastrointestinal semi-obstructions and pancreatitis can also have these symptoms.