What Is Parvo In Dogs? Parvo Virus In Dogs Canine parvovirus (CPV), as the name suggests, is a viral infection that is highly contagious in dogs. It’s part of the Parvoviridae virus family. The CPV initially infects the lymphoid tissue in the throat of a dog after it has been swallowed. It replicates here before moving through the bloodstream to attack the fast dividing i … [Read more...]