Final answer:
In dogs, the positions of the heart valves are similar to those in humans, but abnormal heart sounds are more commonly heard in humans in the sternal area.
Step-by-step explanation:
In dogs, the positions of the heart valves are similar to those in humans. However, abnormal heart sounds, known as heart murmurs, are more commonly heard in humans in the sternal area. Heart murmurs are caused by turbulent blood flow through the heart valves, which can be a sign of valve disorders or other heart conditions.
For example, a mitral valve prolapse is a common valve disorder in humans that can cause a heart murmur. In this condition, the mitral valve doesn't close properly, allowing blood to leak back into the left atrium. This can result in a distinct heart sound, which is auscultated in the sternal area.
Overall, while the positions of heart valves are similar between dogs and humans, the prevalence and types of abnormal heart sounds differ, with humans experiencing more heart murmurs in the sternal area.