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Do Your Homework and Resarch the Genetic Diseases of Your Desired Breed Before Buying a Puppy
Know Canine Disease. Here is an example:
Patent Ductus Arteriosus: At birth, mammals must adapt from living in a fluid environment (the amniotic fluid in the mother's uterus) where they acquire oxygen through the mother's blood, to breathing air and acquiring oxygen through their own lungs. The ductus arteriosus is very important in the adaptation process. The ductus arteriosus is a normal, small communicating blood vessel beside the heart, connecting the pulmonary artery (which carries blood to the lungs) and the aorta (which carries blood to the rest of the body). Before birth, most of the blood from the fetal heart bypasses the fetal lungs via the ductus arteriosus. At birth, the blood supply from the mother is terminated when the umbilical cord is cut, the dog (or other mammal) begins breathing on its own, and blood flow through the ductus arteriosus is no longer necessary. Within a few days, the ductus shrinks and closes off completely.
Where the ductus arteriosus does not close within 24-48 hours after birth, the dog is left with a patent ductus arteriosus (PDA). PDA causes unnecessary recirculation of blood through the heart, greatly increasing the workload of the heart and potentially causing terminal heart failure in time if the PDA is not closed via surgery. The extent to which a PDA affects any given dog depends on the degree of patency, or size, of the ductus.