Day 5 of my puppys sickeness: ok ive found out more stuff about my puppys sickness, its called the canine parvovirus and its like a lethal cancer for dogs. this usually happens to big type of dogs and they usually die at the 2nd or 3rd day of the sickness which a relief since this is the 5th day for my puppy. the deadline is one the 10th day so if your puppy reaches that....