(particularly purebreds) that are more commonly affected than others. These include the Akita, Pug, Chow Chow , Shar Pei , St. Bernard, Cocker Spaniel, Boxer, Springer Spaniel , Labrador Retriever , Cavalier King Charles Spaniel , Bull Mastiff, Great Dane , Irish Setter, Poodle and particularly Bloodhound . The condition is usually