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Pictures of Dog Vomit with Blood – Explained by a Veterinarian

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red image illustrating blood in vomit

Waking up or coming home to a vomiting dog can be an upsetting experience and if the resulting vomit contains blood, you may be scared for your dog’s health. Blood in a dog’s vomit may signal something serious is wrong with them, but there are several explanations. In this article, we will review several pictures of situations with blood in a dog’s vomit, and discuss the most likely causes.

In all cases, it is essential to take your dog to see your veterinarian as soon as possible. It will be helpful to the veterinarian if you also take a picture of the vomit or be able to accurately describe it. Below are some picture examples of dog vomit with blood in it that may be helpful.

Picture 1: Your dog’s vomit contains small amounts of frank (red blood) mixed with phlegm

Small amounts of red blood mixed with phlegm in dog or cat vomit

Small amounts of red blood in a dog’s vomit could be due to several issues or medical conditions. The most likely causes include the following:

  • irritated esophagus or pharynx
  • ruptured capillaries in esophagus
  • bleeding from nose
  • infected/broken tooth
  • trauma in mouth
  • clotting disorder
  • cancer
  • parasites
  • rodenticide toxicity

Picture 2: Your dog’s vomit contains moderate amount of blood mixed in liquid

In this situation, the amount of blood in your dog’s vomit appears to be higher. The most likely causes include the following:

  • gastrointestinal foreign body or obstruction
  • clotting disorder
  • cancer
  • internal bleeding
  • rodenticide toxicity
  • severe oral trauma
  • nosebleed

Picture 3: Your dog’s vomit contains coagulated blood (black or coffee ground appearance)

Example picture 1/2:

dog's vomit with coagulated blood

Example picture 2/2:

dog's vomit with coagulated blood (second example)

If your dog’s vomit appears to contain blood that looks almost black or has the appearance of coffee ground, the following causes are more likely:

  • bleeding in the gastrointestinal tract
  • clotting disorder
  • gastrointestinal foreign body or obstruction
  • cancer
  • parasites

Important tip: Remember that you can not draw a definite conclusion based on a picture alone. It’s important to meet with your veterinarian to do a full physical exam to understand the true cause of your dog’s ailments.

Picture 4: Your dog’s vomit shows a moderate amount of blood mixed in food.

Dog's vomit with moderate amount of blood mixed with food

The most likely medical conditions causing dog vomiting with a moderate amount of blood mixed in food includes:

  • gastrointestinal foreign body or obstruction
  • cancer
  • internal bleeding
  • clotting disorder
  • parasites
  • rodenticide toxicity
  • nose bleed

Picture 5: Your dog’s vomit contains large amount of frank red blood (hemorrhage)

dog vomit with bright red blood

If your dog is vomiting large amounts of blood, it is an emergency, and they must be taken to a veterinarian immediately. Causes could include:

  • severe internal hemorrhage
  • rodenticide toxicity
  • severe clotting disorder
  • trauma
  • cancer

What other signs are typically seen with dogs vomiting blood?

A dog that will vomit with blood will often show one of the following signs:

  • Retching
  • Hacking
  • Vomiting food or liquid
  • Blood around mouth/nose
  • Red tinge, streaking, blood clots, or frank blood in vomit

Steps you can take at home to help your dog

If your dog is vomiting large amounts of blood, it is an emergency, and you should take them to the nearest veterinarian immediately. If the amount of blood seen in the vomit is small, stay calm and keep your dog calm as well. You should take away any food or chew toys they have and try to determine where the blood is coming from.


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Small irritations or cuts in the mouth may not need veterinary intervention. However, if the source of the blood is not easily identified, or it is coming from the nose or internally, the dog should see their veterinarian as soon as possible.

When to call your veterinarian

If the amount of blood is large, for example, it appears the dog is vomiting just blood, they must be taken to the nearest veterinarian immediately. This type of hemorrhage is an emergency. Smaller amounts of blood may not be as urgent but should almost always be examined by a veterinarian to determine the cause. Rodenticide toxicity, clotting disorders, gastrointestinal obstructions, cancer, and parasites can all be fatal if left untreated. A pet has the best chance of recovery if diagnosed and treated early.

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Disclaimer: This website's content is not meant to be a substitute for veterinary care, diagnosis, or treatment. Always consult with your veterinarian to determine the best course of action. Read More.

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