A dog vomiting yellow typically means it is vomiting bile, a digestive fluid produced by the liver and stored in the gallbladder. This often happens when the dog's stomach is empty for a long period, causing bile to irritate the stomach lining and trigger vomiting. This condition is sometimes called "Bilious Vomiting Syndrome" and is common early in the morning or late at night before meals. Other causes of yellow vomiting can include gastrointestinal irritation, acid reflux, ingestion of toxins, motion sickness, certain diseases like pancreatitis, liver problems, or intestinal blockages. If vomiting is frequent, accompanied by other symptoms like weakness, diarrhea, blood, or refusal to eat, veterinary attention is needed, as these could signal more serious health issues.
Common Causes of Yellow Vomiting in Dogs
- Empty stomach / Bilious Vomiting Syndrome: Bile buildup due to long fasting periods.
- Gastrointestinal irritation: From eating spoiled food, garbage, or irritants.
- Acid reflux: Stomach acids and bile flow back into the esophagus.
- Underlying health conditions: Pancreatitis, liver disease, infections, or blockages.
- Dietary causes: Changes in diet or eating too fast.
What to Do
- Offer smaller, more frequent meals to prevent an empty stomach.
- Provide plenty of fresh water.
- Monitor for additional symptoms like lethargy, diarrhea, or blood in vomit.
- Seek veterinary care if vomiting persists or is severe.
This information helps pinpoint why a dog may vomit yellow and underscores the importance of observing other signs to determine urgency.
