TL;DR: Dog wheezing is a high-pitched sound caused by narrowed airways that requires a prompt veterinary exam, but it becomes an immediate emergency if your dog has blue gums or severe breathing difficulty.
What exactly is dog wheezing and what causes it?
Wheezing is a high-pitched, whistling sound that occurs when your dog's airways are narrowed or partially obstructed. It is most commonly heard when a dog is exhaling. This sound indicates that air is struggling to move through the bronchi or the trachea, often due to inflammation, mucus buildup, or a physical constriction. Common underlying causes include canine asthma, infectious bronchitis (kennel cough), allergies, or even cardiovascular issues.
Is dog wheezing considered a medical emergency?
- Wheezing is generally classified as a medium-urgency situation and requires a veterinary appointment as soon as possible.
- It is typically not an immediate life-threatening emergency unless your dog is showing signs of severe respiratory distress.
- Proceed to an emergency animal hospital immediately if you notice blue or pale gums or extreme lethargy.
- Seek emergency care if your dog is using their abdominal muscles to pump air.
Why should I record a video of my dog wheezing for the vet?
- Recording a video is vital because wheezing can be intermittent and may stop by the time you arrive at the clinic.
- A clear video allows the veterinary team to observe the physical effort required for your dog to breathe.
- Watching the video helps the vet differentiate between a reverse sneeze, a cough, and true wheezing before the physical exam starts.
Clinical Context (Merck Veterinary Manual)
Wheezing during exhalation in dogs indicates potential airway obstruction. Auscultation reveals high-pitched wheezes throughout the lung field, and severe cases may present with labored breathing, an expiratory push of the diaphragm, cyanosis, and anxiety. Large airway pathologies, such as foreign bodies, edema, laryngeal paralysis, tracheal collapse, elongated soft palate, aspiration, neoplasia, or pharyngeal hematomas, should be considered. Severe, life-threatening situations can involve cyanosis, open-mouth breathing, collapse, and asphyxiation, potentially stemming from anaphylactic reactions or bronchial obstruction due to edema, mucus, exudates, or foreign material. Marked expiratory stridor may be present with upper respiratory tract obstruction, sometimes accompanied by extended head and forelegs to maximize airflow.
Chapter: Emergency, Anesthesiology, Respiratory
Source: The Merck Veterinary Manual, 11th Edition (Page 1662)