Laryngeal paralysis in dogs
Laryngeal paralysis can cause progressive upper airway obstruction and ultimately death, usually in older, large-breed dogs. Videos of normal and paralyzed laryngeal abduction are available in this article.
R Millard and Karen M. Tobias. "Laryngeal paralysis in dogs" Compendium on Continuing Education for the Practicing Veterinarian 31.5 (2009): 219-219.