Signs that dogs are getting better include: their spirits are getting better, they start eating food and drinking water, they no longer vomit, they no longer have diarrhea and blood in their stools, they have the strength to walk around, etc. Generally, the occurrence of these conditions means that the dog is starting to improve, but it still needs Continue treatment until your dog has fully recovered. The first three days of a dog's parvozoism are the early stage of the disease, and the fourth day is the middle and late stages of the disease. The disease will suddenly worsen. If the dog can survive it, it will start to get better on the sixth and seventh days.