Save to mypetMD Related ArticlesPneumonia (Interstitial) in Dogs Pneumonia refers to an inflammation in the lungs, while interstitial pneumonia refers to a form of pneumonia in which the inflammation occurs...READ MORELung Lobe Twisting in Dogs Torsion, or twisting, of the lung lobe results in the obstruction of the dog's bronchus and vessels, including the veins and arteries.