Rabid animals undergo personality changes during the course of the disease; these changes may include aggression and biting or, conversely, increased friendliness and affectionateness.
Puppies should never be orally administered with drugs, food or any liquid during course of disease, as it may cause severe and irreversible damage to gastrointestinal tract.
As there is no cure for any virus, treatment for parvo is mostly that of supporting the different systems in the body during the course of the disease.