Dog owners in Northeast Ohio are concerned as a mystery dog illness continues to sweep the nation. Confirmed now in 16 states. The mystery illness includes symptoms like sneezing, coughing, nasal discharge and fever. Some dogs with labored breathing have developed pneumonia. Thus far, veterinarians don’t believe the illness can pass between other animals or people. Similar to humans, elderly dogs, dogs under one, and dogs with pre-existing conditions are most at risk.