This paper describes the correction of a Patent Ductus Arteriosus (PDA) in a 5 month old male German Shepherd Dog named "Beast" using the Amplatz Canine Ductal Occluder (ACDO). Beast was referred to the Cornell University Hospital for Animals on 1.9.08 as a referral from his rDVM for a continuous heart murmur with a point of maximal intensity (PMI) on the left. He showed no clinical signs on presentation and a grade 4/6 murmur was noted around the left third intercostal space along with bounding pulses. Echocardiography was performed which confirmed the presence of a PDA and Beast returned on 2.25.08 to have his PDA repaired using the ACDO. The occlusion device was placed successfully while the dog was under general anesthesia, effectively occluding blood flow through the PDA.