Fungal Infection (Blastomycosis) in Dogs This terrible disease has killed one of my dogs, and over a hundred on Manitoulin Island over the last few years. Poor Popeye was only sick a couple of weeks before he died. Not long enough for the medication to start working. Symptoms can include coughing, lesions and skin irritations, it sometime lodges in the eyes and blindness can result. Although cross contamination between humans