Final answer:
A neonatal foal with a normal heart would not have a persistent patent ductus arteriosus or abnormal murmurs.
Step-by-step explanation:
A neonatal foal with a normal heart would not have a persistent patent ductus arteriosus, which is the failure of the ductus arteriosus to close. This condition occurs when the blood vessel that connects the aorta and pulmonary artery in the fetal heart fails to close after birth. A normal neonatal foal would also not have an abnormal murmur on either side of the heart.