Lung Lobe Torsion
A dog’s lung can rotate and twist, a condition called lung lobe torsion. “The lung turns over on itself, blocking the airway,” Meeks explains. In addition to coughing, lung lobe torsion can result in symptoms like coughing up blood, pain, fever, and lethargy.
Vets often have trouble pinpointing precisely why this happens, but lung lobe torsion is more common in dogs with fluid in the chest, Meeks says, or “it can possibly occur as a result of heart disease or another condition.”
Some breeds tend to be more at risk. “Smaller dogs like Pugs, as well as large, deep-chested breed dogs may be predisposed,” says Dr. Zenithson Ng, a board-certified vet and clinical assistant professor at the University of Tennessee, College of Veterinary Medicine.
The Afghan Hound is 133 times more likely to develop lung lobe torsion than other breeds, according to a report by MediMedia Animal Health. Smaller breeds at higher risk (aside from Pugs) include Yorkshire Terriers, Beagles, and Miniature Poodles.