Q. How do I know if my dog has parvo
A. Well from your perspective it is difficult to tell 100%, you can highly suspect it ,if your pup is not completely protected with a full vaccination course and he is showing symptoms of vomiting and diarrhoea or just severe vomiting or severe diarrhoea. Tipically the vomit and diarrhoea will contain blood. In my experience sometimes puppies can just be very dull and lethargic and suddenly pass a large amount of hemorrhagic diarrhoea and sadly pass away. It is a very important to vaccinate your puppy !