My dog threw up blood. What does it mean and when should I see a vet?
Updated On September 23rd, 2025
Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 93 lbs
My dog has been vomiting what looks to be blood since around 8 am today. It is currently 1 pm and he is vomiting less frequently and is currently taking a nap. The attached image is what it looks like. We have given him small amounts of water but no food.
5 Answers
Most Helpful Answer
Published on March 15th, 2019
I agree that it looks like blood. Vomiting blood is always significant and Tycho needs to see his veterinarian today. Vomiting blood can be a sign of rat poisoning, autoimmune condition, severe stomach ulcer, intestinal blockage or liver disease And other causes are also possible. Just like with humans, the sooner that you get an appropriate diagnosis and treatment, the better the prognosis. Best of luck and please feel free to post any additional questions.
2Pet Parents found this answer helpful
Related Answers from Veterinarians
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Published on January 4th, 2018
Thanks for using Petco Pet Education Center, formerly Petcoach! This appears to be vomit that appears to have blood in it. When there is evidence of blood in the vomit, that raises concern for things like a gastrointestinal ulcer, gastrointestinal tumor, severe gastroenteritis, foreign body ingestion, among other possibilities. I recommend that you have Bear evaluated by a veterinarian for further assessment and treatment. Some tests that are usually run include bloodwork (CBC and chemistry panel +/- coagulation profile) and abdominal ultrasound. Thoracic/cervical radiographs may follow. Further diagnostics will be based on the findings up to that point. Keeping my fingers crossed that everything will be fine with Bear!
1Pet Parents found this answer helpful
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Published on November 29th, 2017
Thanks for using Petco Pet Education Center, formerly Petcoach! Sorry to hear that Uzi is not feeling well. Vomiting blood is very concerning and can be observed with things like gastrointestinal ulcers, coagulation issues, toxicities like rat poison, among other possibilities. I highly recommend that you have him evaluated by a veterinarian as soon as possible as this is very concerning as he can get very dehydrated but also anemic. A veterinarian would be able to stabilize him and try to find out what exactly is causing his vomiting episodes. Good luck! I really wish a quick recovery from this. Good luck!
1Pet Parents found this answer helpful
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Published on December 4th, 2017
Poor Ellie - it sounds like she is really not feeling well! It is very concerning that she vomited blood, as this may be a sign of ingestion of a toxin, a foreign body obstructing the intestines, or a torsion of the intestines. She should be seen by a veterinarian immediately - she may need to be stabilized and have blood work and x-rays taken to figure out what is going on. I hope this helps and that Ellie starts feeling better soon!
1Pet Parents found this answer helpful
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Published on November 4th, 2019
This could be due to a number of things like irritation of the stomach, a problem with Francie's esophagus, and GI ulcers to name a few. I'm not sure what tests have been done on her, but since this is happening again, I recommend further testing such as an endoscope (putting a camera down her esophagus to see what is going on).
2Pet Parents found this answer helpful
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