“…1), micro-bubble study showed the defect localization just below the pulmonary valve and between two ventricular chambers, suggestive for a perimembranous or conoventricular VSD (type-1) in this case. Based on these observations including a VSD, pulmonic stenosis, overriding aorta and right ventricular hypertrophy, ToF was diagnosed in this dog, as suggested [2,4] .…”