Laryngeal paralysis is fairly common in large breed and geriatric dogs, particularly in the Labrador retriever, is rarely found in cats, and can also occur in horses where it is referred to as roaring, roarer's syndrome, or medically as laryngeal hemiplegia or recurrent laryngeal neuropathy ( RLN ).
12.
Investigations into idiopathic laryngeal paralysis by two groups ( in Michigan and Tennessee ) between 2005-2013 showed that dogs with ILP did not only suffer dysfunction of the laryngeal nerves; they found that this was just one prominent symptom of what was a very gradually progressing polyneuropathy of old age, which also affected other nerves in the body.
13.
Animals with this condition have historically tended to come to veterinary attention when they develop difficulties related to opening and closing the arytenoid cartilages of the larynx in the throat of the animal, causing difficulty with breathing and swallowing, and was therefore for many years the condition was believed to be a idiopathic form of laryngeal paralysis, meaning " of unknown cause ".
