Background
  1. Home
  2. News
  3. FAQ
  4. What is the cause of blood coming out of the mouth?

What is the cause of blood coming out of the mouth?

Bleeding from the mouth in dogs can result from dental disease, trauma, oral tumors, infections, clotting disorders, foreign objects, or teething in puppies.

Understanding Why Dogs Bleed from the Mouth

Bleeding from a dog’s mouth can be alarming. While some causes are minor, others may signal serious health concerns. Recognizing the reasons behind oral bleeding is crucial for timely and appropriate care.

Common Causes of Oral Bleeding in Dogs

  • Periodontal Disease: The most frequent cause. It begins with plaque and tartar buildup, leading to gum inflammation (gingivitis) and infection.
  • Teething (Puppies): Mild bleeding is common in puppies aged 12–16 weeks as they lose baby teeth.
  • Trauma or Injury: Chewing on sharp objects, falls, or fights can damage oral tissues and cause excessive bleeding.
  • Foreign Objects: Objects like bones or sticks may get lodged in the mouth, causing irritation and bleeding.
  • Oral Tumors: Both benign and malignant growths can ulcerate and bleed. Signs include swelling and difficulty eating.
  • Blood Clotting Disorders: Conditions like von Willebrand’s disease or exposure to rat poison can trigger spontaneous bleeding and bruising.
  • Oral Infections: Bacterial or fungal infections can develop after trauma or dental neglect, leading to inflammation and bleeding.
  • Nutritional Deficiencies: Rare but possible, particularly with deficits in vitamin C, impacting gum health.

Associated Symptoms to Watch For

  • Persistent or excessive gum bleeding
  • Bad breath (halitosis)
  • Red, swollen, or receding gums
  • Reluctance to eat or difficulty chewing
  • Excessive drooling, sometimes with traces of blood
  • Pawing at the mouth
  • Visible foreign bodies or injuries
  • Lethargy or weakness
  • Pale or white gums
  • Facial swelling

When to See a Veterinarian

Seek veterinary care if your dog experiences:

  • Continuous or unexplained oral bleeding
  • Signs of discomfort, lethargy, loss of appetite
  • Pale gums, signs of weakness or collapse
  • Visible oral masses or stuck foreign objects

In emergencies—like severe bleeding, signs of shock, or difficulty breathing—immediate care is critical.

Diagnosis and Treatment Options

To identify the cause, a veterinarian may perform:

  • Physical and oral exams (may need sedation)
  • Dental X-rays or other imaging like CT scans
  • Blood tests including clotting profiles
  • Biopsy of suspicious growths
  • Urine tests to check systemic health

Treatment approaches may include:

  • Professional dental cleaning and extractions
  • Antibiotics and anti-inflammatories
  • Tumor removal or referral to oncology
  • Removal of foreign bodies under anesthesia
  • Supportive care like fluids and pain management
  • Blood transfusions in severe cases

Prevention and At-Home Care

  • Brush your dog’s teeth regularly with pet-safe toothpaste
  • Provide routine dental check-ups and cleanings
  • Feed a balanced, nutrient-rich diet
  • Use safe chew toys—avoid bones, hard plastics, and sticks
  • Supervise toy use, especially outdoors
  • Watch for signs of oral discomfort or behavioral changes

Proper dental hygiene and attentive pet care can prevent many causes of mouth bleeding. Early intervention ensures your dog stays healthy and pain-free.

Share on:

dog mouth bleeding

 dog bleeding gums

 canine dental disease

 oral tumors in dogs

 dog teething

 oral trauma dogs

 periodontal disease dogs

 foreign object dog mouth

 puppy bleeding gums

 dog mouth injury

 bleeding dog teeth

 dog oral care

 dog gum inflammation

 clotting disorder dogs

 von willebrand disease dog

 dog mouth infection

 dental hygiene dogs

 safe dog chews

 puppy dental problems

 dog bleeding reasons

 emergency vet dog

 oral tumor symptoms dog

 tartar buildup dog

 dog nutrition gums

 bloody saliva dog

Recommended

Police investigating an animal cruelty case related to pets left in a hot car

Massachusetts Animal Cruelty Charges Filed in Bridgewater Hot Car Case

Read the article

Mutilated birds found in a bag as part of an animal cruelty investigation

Animal Cruelty Investigation Launched in Putnam County Following Discovery of Ritualistic Bird Deaths

Read the article

Wood stork rescued from fishing line entanglement by Polk County Animal Control

Wood Stork Conservation Success: Quick Action Saves Entangled Bird in Polk County

Read the article

Today is the perfect time to get your

Pet Health Report

Upload a photo of your pet to receive instant health and care insights.

report_card