The larynx, which is the opening through which outside air flows into a dog’s lungs, allows for vocalization and prevents food inhalation (aspiration) — both of which are important functions. Paralysis of the larynx, otherwise known as laryngeal paralysis or “lar par” for short, means that one or both of the vocal folds do not open fully during breathing. The condition can occur in cats but is more common in dogs, and specifically in large-breed dogs. It can be hereditary in Bouviers, Huskies, Bull Terriers, Dalmatians and Rotweillers and is also commonly seen (but not necessarily hereditary) in Labs, Goldens, St. Bernards and Newfoundlands.
Laryngeal Paralysis
Laryngeal Paralysis or “Lar Par” in Dogs
The first thing you might notice if your dog is suffering from lar par is a change in his or her bark, which might sound more hoarse, because the vocal folds are not moving as they once did. Due to the importance of panting, which is essentially moving air through the larynx, as a cooling function in dogs, you might also find that your dog has exercise intolerance and/or might breathe very noisily or heavily in warm weather.