Is your puppy coughing or having discharge from their nose? They could have canine herpes virus causing these symptoms. Most puppies are vaccinated for this virus, and it is not commonly seen, but if you adopted a dog from a shelter or found a litter of puppies, this could be the cause of these signs that you are seeing. If your puppy is sick, you should take them to a vet right away as the earlier you start treating these issues, the quicker they will recover.