TL;DR: Sudden bleeding from both nostrils is a high-priority emergency that often indicates serious systemic issues like toxin ingestion or clotting disorders. Contact an emergency veterinarian immediately and monitor your dog for signs of shock.
What does it mean if my dog is bleeding from both nostrils?
Sudden bleeding from both nostrils, medically termed bilateral epistaxis, is a concerning clinical sign in dogs. Unlike a single-sided bleed which may be caused by a local irritant, bleeding from both sides often indicates a systemic issue where the body's ability to clot blood has been compromised or there is widespread inflammation or vascular damage.
Is bilateral epistaxis in dogs considered a medical emergency?
Yes. The urgency level for sudden bleeding from both nostrils is High. You should contact an emergency veterinarian immediately and monitor for the following signs of shock or underlying complications:
- Pale or white gums
- Rapid or labored breathing
- Physical collapse or extreme weakness
- Suspected ingestion of toxins, such as rat poison
- Signs of severe systemic infection
How can taking a photo of the bleeding help my veterinarian?
If you can safely do so, taking a clear photo of the bleeding and any discharge can be incredibly helpful for the veterinary team for several reasons:
- It captures the volume, color, and consistency of the blood at its peak before it changes or is cleaned away.
- It allows the triage nurse to quickly determine the clinical severity upon your arrival.
- It provides visual clues to the underlying cause, which can lead to faster, life-saving treatment.
Clinical Context (Merck Veterinary Manual)
In dogs presenting with sudden bilateral epistaxis, emergency triage should include evaluation of mucous membrane color, capillary refill time, heart rate, pulse rate and quality, and level of consciousness to assess for anemia, shock, hypoxemia, or hyperdynamic states. Concurrent systemic disease should be ruled out with a complete blood count, serum chemistry profile, urinalysis, one-stage prothrombin time, partial thromboplastin time, and buccal mucosal bleeding time in addition to a platelet count. Nasal imaging via radiographs or CT is indicated. Rhinoscopy, retroflex nasopharyngoscopy, nasal flushing, and nasal biopsy should be delayed until after imaging to avoid iatrogenic changes. Common causes of epistaxis include oronasal neoplasia, dental disease (oronasal fistula), nasal foreign body, or nasopharyngeal disease (foreign body or mass lesions), and intranasal fungal infection.
Chapter: Otorhinolaryngology, Diagnostic Imaging, Clinical Pathology
Source: The Merck Veterinary Manual, 11th Edition (Page 1480)