TL;DR: Coffee ground vomit indicates internal bleeding and is a medical emergency requiring immediate veterinary attention. Taking a photo of the vomit can help the veterinary team quickly assess the severity and prepare for treatment.
What does it mean if my pet’s vomit looks like coffee grounds?
Vomiting liquid that resembles dark, granular coffee grounds is a serious clinical sign known as hematemesis. This specific appearance indicates that blood has been present in the stomach long enough to be partially digested by stomach acid. The acid oxidizes the iron in the blood, turning it from bright red to a dark, clumpy brown or black color.
How urgent is it if my pet has coffee ground vomit?
- Treat this as a medical emergency requiring immediate veterinary care.
- Be aware that digested blood suggests serious issues like gastric ulcers, severe inflammation, toxins, or foreign body obstructions.
- Contact an emergency veterinarian or your local animal hospital immediately to prevent rapid blood loss, anemia, or shock.
- Do not wait for your pet to show other signs of illness before seeking help.
Why should I take a photo of the vomit for the veterinarian?
- Take a clear photograph of the vomit before cleaning it up if it is safe to do so.
- Provide the veterinary team with objective evidence of the volume, color, and texture of the fluid.
- Help the triage staff distinguish between digested blood and dark-colored food or bile.
- Allow the hospital to prioritize your pet’s care and prepare diagnostic tools before you arrive.
Clinical Context (Merck Veterinary Manual)
In cats, vomiting that contains dark coffee ground material is clinically significant and may indicate a bleeding lesion, such as a gastric ulcer or neoplasm. If vomiting persists, careful monitoring for depression, abdominal discomfort, and/or fever is critical, and reevaluation is warranted. Abdominal palpation should be performed to assess for foreign bodies or abdominal discomfort, and the oral cavity should be carefully examined for linear foreign bodies. Abdominal radiographs may be indicated to evaluate for radiopaque foreign objects or signs of intestinal distention suggestive of obstruction. In cases of severe abdominal hemorrhage due to liver lobe rupture, ultrasonography can identify a developing hematoma and aspiration of abdominal effusion can confirm active hemorrhage.
Chapter: Gastroenterology, Infectious Disease
Source: The Merck Veterinary Manual, 11th Edition (Page 156)