“…Congenital heart defects in cats include ventricular septal defect (VSD), patent ductus arteriosus (PDA), subaortic stenosis (SAS), tetralogy of Fallot (a combination of pulmonary artery stenosis, intraventricular septal defect, right ventricular hypertrophy and an overriding aorta), dysplasia of the mitral or tricuspid valve, and diaphragmatic pericardial hernia. No breed predisposition has been reported for these defects (1,8,13,15). Acquired diseases are much more common in cats.…”