The Irish Setter (Irish: sotar rua, literally 'red setter') is a setter, a breed of gundog, and family dog. The term Irish Setter is commonly used to encompass the show-bred dog recognised by the American Kennel Club as well as the field-bred Red Setter recognised by the Field Dog Stud Book. It would be incorrect to assume the dog described above in any way resembles the Irish Setter (or any setter) as we know the breed today. Caius was referring to a type of setting spaniel, most likely now extinct. The description of the work undertaken by this early pillar of the breed resembles the working behaviour of modern Irish Setters. Gluten intolerance in Irish Setters is a naturally occurring genetic disorder that is the result of a single autosomal recessive locus.