Why Does My Dog Have A Bloody Nose?

If your dog has a bloody nose, it can be alarming, especially when it seems to happen out of nowhere. One minute your dog is acting completely normal, and the next you notice blood dripping from a nostril, on their bedding, or even on the floor. While a small amount of bleeding can sometimes come from something minor, a bloody nose in a dog can also point to an underlying health problem that needs veterinary attention.

A dog’s nose can bleed for several reasons, ranging from irritation and minor injuries to infections, dental problems, blood-clotting disorders, or nasal tumors. It’s important to figure out the possible causes of your dog’s bloody nose and when it’s time to contact your veterinarian.

What Causes a Bloody Nose in Dogs?

A bloody nose, which veterinarians call epistaxis, can develop when the blood vessels inside a dog’s nasal passages become irritated or damaged. Because a dog’s nose contains many small blood vessels, even a relatively minor injury can cause noticeable bleeding.

Dogs can develop nosebleeds after bumping their noses, scratching at their faces, inhaling an irritating substance, or getting something stuck inside the nasal passage. However, nosebleeds can also occur because of health conditions that affect the nose, blood vessels, or the body's ability to form blood clots.

There are Many Different Potential Causes of Nose Bleeds In Dogs:

1. Your Dog May Have Injured Their Nose

One of the simplest explanations for a bloody nose is trauma. Your dog may have bumped his or her nose while playing, run into furniture, dug around in the yard, or gotten into a scuffle with another dog. A scratch or small cut inside the nostril can bleed more than you might expect because the nasal tissues contain numerous blood vessels.

Dogs that spend a lot of time outdoors can also injure their noses while exploring bushes, tall grass, or rough terrain. In these types of situations, the bleeding may stop once the irritated tissue has a chance to heal.

2. Something May Be Stuck in Your Dog's Nose

Any kind of foreign object can cause a dog to sneeze, paw at their face, and develop a bloody nose. Grass seeds, pieces of plant material, dirt, or other small objects can become lodged inside a nostril and irritate the delicate nasal lining.

If your dog has something unwanted in his nose, your dog might suddenly start sneezing repeatedly, rubbing their nose, or developing discharge from only one nostril. Blood mixed with nasal discharge can also occur.

Trying to dig around inside your dog's nostril to remove any type of object can cause additional injury. If you think this might be the case, your veterinarian can examine the nasal passage and safely remove a foreign body when necessary.

3. Nasal Infections Can Cause Bleeding

Bacterial, fungal, and other infections can affect a dog's nasal passages and cause inflammation and irritation. As the nasal tissues become inflamed, small blood vessels can become damaged, resulting in a bloody discharge.

Fungal infections can sometimes cause apparent nasal symptoms, including sneezing, congestion, nasal discharge, facial discomfort, and nosebleeds. Some fungal infections can become serious if they spread into surrounding tissues, so persistent nasal symptoms definitely warrant a visit to your veterinarian.

4. Dental Problems Can Sometimes Cause a Bloody Nose

Problems involving the teeth and upper jaw can occasionally affect the nasal passages. The roots of some upper teeth sit close to the nasal cavity, so severe dental disease or an infected tooth can sometimes cause inflammation in nearby tissues.

A dog with dental disease may also have bad breath, difficulty chewing, drooling, swollen gums, or changes in appetite. When a bloody nose occurs along with noticeable dental problems, your veterinarian may want to examine your dog's mouth as well as their nose.

5. Allergies and Nasal Irritation Can Also Play a Role

Dogs can experience irritation in their nose from dust, smoke, household chemicals, perfumes, cleaning products, and other airborne substances. Allergies can also cause sneezing and nasal inflammation.

Frequent sneezing can irritate the delicate tissues inside the nose, and repeated rubbing or pawing at the face can contribute to bleeding. However, allergies alone are not one of the most common explanations for significant or recurring nosebleeds, so persistent bleeding should not automatically be blamed on allergies.

6. Blood-Clotting Problems Can Cause a Dog's Nose to Bleed

If your dog has a blood clot and it interferes with normal blood clotting or even just a minor irritation, it can cause consistent bleeding.

Certain diseases can interfere with clotting, and some medications and even pesticides can increase bleeding risk.  A dog with a clotting problem may develop other signs of abnormal bleeding, such as bleeding gums, bruising, blood in the urine or stool, or unusually heavy bleeding from a small wound.

7. Tick-Borne Diseases Can Sometimes Cause Nosebleeds

Some tick-borne infections can affect a dog's blood cells and platelet levels. Platelets play an important role in blood clotting, so a significant decrease can make bleeding more likely.

Depending on the disease, dogs may also develop lethargy, fever, weakness, swollen lymph nodes, bruising, or changes in appetite. Dogs that live in or travel through areas where tick-borne diseases occur may need testing when unexplained bleeding develops.

8. Nasal Tumors Can Cause a Bloody Nose

Although not every bloody nose means cancer, nasal tumors are one of the more serious causes veterinarians consider, particularly when nosebleeds keep coming back.

A dog with a nasal tumor may develop recurring bleeding, persistent nasal discharge, frequent sneezing, noisy breathing, facial swelling, or changes in the shape of the nose or face. Nasal tumors become more common as dogs get older, although they can occur at different ages.

A recurring bloody nose, especially when it affects one nostril, needs to be observed by a vet to figure out the cause.

Why Is My Dog's Nose Bleeding From One Nostril?

If your dog is bleeding from one nostril, it can also help your veterinarian determine the cause. A problem that is affecting one side of your dog’s nasal cavity, such as a foreign object, localized infection, dental problem, or nasal growth, may cause bleeding primarily from that nostril.

That does not mean bleeding from one nostril automatically indicates something serious. A small scratch or irritation can also cause one-sided bleeding. However, persistent or recurring bleeding from one nostril warrants an examination.

What Should You Do If Your Dog Has a Bloody Nose?

If your dog has a bloody nose, try to keep your dog calm because excitement and physical activity can increase the blood pressure and potentially make bleeding worse. Try to get your dog to rest quietly and avoid allowing your pup to run, play, or paw at their face.

You can place a cool compress gently against the bridge of your dog’s nose. Avoid pushing anything inside the nostril, and do not give your dog human medications unless your veterinarian specifically tells you to do so.

If the bleeding is mild and stops quickly, keep an eye on your dog and look for other symptoms. Even when the bleeding stops, contact your veterinarian if the nosebleed was unexplained, happens repeatedly, or occurs along with other concerning changes.

When Should You Take Your Dog to the Vet for a Bloody Nose?

A dog with a bloody nose should receive prompt veterinary attention when the bleeding is heavy, does not stop, or keeps coming back. You should also seek veterinary care when your dog seems sick or develops other symptoms.

Contact your veterinarian promptly if your dog has:

• A nosebleed that does not stop

• Heavy or continuous bleeding

• Repeated nosebleeds

• Difficulty breathing

• Facial swelling

• Severe or frequent sneezing

• Pale or white gums

• Weakness, collapse, or extreme lethargy

• Unexplained bruising or bleeding elsewhere

• Blood in the urine or stool

• A possible exposure to rat or mouse poison

• A significant injury or trauma

A possible poisoning or severe bleeding should always be treated as an emergency.

How Will a Veterinarian Find Out Why Your Dog's Nose Is Bleeding?

Your veterinarian will start with a physical examination and ask questions about when the bleeding started, how often it occurs, whether it affects one or both nostrils, and whether your dog has experienced trauma or possible toxin exposure.

Depending on your dog's symptoms, the veterinarian may recommend blood tests to check red blood cells, platelets, and clotting ability. They may also examine the mouth and teeth, test for infectious diseases, or recommend imaging such as X-rays or advanced imaging to look more closely at the nasal passages.

The appropriate testing depends on your dog's age, symptoms, medical history, and how severe or persistent the bleeding is.

Can You Prevent Nosebleeds in Dogs?

You can’t prevent every cause of a bloody nose, but you can reduce some of the risks. Keep potentially toxic substances, including rodenticides, safely away from your dog. Avoid exposing your dog to heavy smoke, harsh chemical fumes, and other known nasal irritants.

Regular veterinary examinations can also help identify dental disease and other health problems before they become more advanced. Keeping your dog on veterinarian-recommended parasite prevention can help reduce the risk of some diseases associated with ticks and other parasites.

Final Thoughts on Bloody Noses in Dogs

A bloody nose in a dog can result from something as simple as a minor injury or nasal irritation, but it can also point to an infection, a foreign object, a clotting disorder, toxin exposure, or another underlying health problem. The amount of blood does not always tell you how serious the cause is.

If your dog's nosebleed is heavy, persistent, recurring, or accompanied by other symptoms, it’s always best to have your veterinarian evaluate the problem. When it comes to unexplained bleeding, finding the underlying cause is the safest way to make sure your dog gets the treatment he or she needs.