Pet doctor online consultation I had a dog for three days and died three days later. I didn't contact the seller when I asked.

Maybe you bought Zhou Gou, and the seller won't admit it at this point. You should know the dog's health when you just bought it, and you'd better find a reliable place to buy it. If the dog you bought has symptoms such as diarrhea or vomiting, it was in a good mental state before its death, mostly a slight infection. Try to throw away the touched places or things, do a comprehensive disinfection at home, and kill the parvovirus in the environment with disinfection and deodorization maintenance solution to provide a good living environment for future pets.