What type of lung sounds are considered normal?

Normal lung sounds are characterized by clear bronchovesicular sounds, which refer to the typical sounds made by air moving through the bronchi and alveoli during breathing. These sounds indicate that the air passages are clear and that the lungs are functioning properly. They should be smooth and consistent, without any abnormal noises.

In contrast, the other types of sounds mentioned indicate potential issues. Wheezes and crackles are often associated with airway obstructions or fluid in the lungs, suggesting conditions like asthma or pneumonia. Stertor and stridor are abnormal sounds that usually indicate obstructed airflow, often due to swelling or a foreign object in the upper airway. Panting sounds can indicate distress or heat regulation attempts, but they don't represent normal lung function. Thus, clear bronchovesicular sounds distinctly signal a healthy respiratory state in canines.