- Typically, a dogs yellow vomit is commonly bile.
Thats likely to mean surgery under general anesthetic and a potential hospital stay at least overnight, perhaps longer. Bilious Vomiting Syndrome can be improved by feeding smaller meals, more frequently. Published
- If you suspect your dog has swallowed something they shouldn't have, seek veterinary care right away as blockages can become life-threatening quickly. When dogs throw up yellow liquid, they're typically vomiting bile.
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If vomiting persists or occurs after stomach/intestine surgery, seek veterinary help immediately. ... Severe pain is most common in the first 2-3 days post-surgery. If your pet shows signs of pain, call us for additional pain management options. Cats are more subtle in showing pain.
- This may include surgery, medications such as antibiotics or anti-inflammatories, medication that reduces stomach acid (like Pepcid), hospitalization and intravenous fluid therapy, deworming, and more. In more mild cases, especially those in which the dog is generally healthy otherwise, your veterinarian may recommend starting with fluids (to make up for any fluid loss from vomiting), injectable anti-nausea medications, and feeding your dog a bland, easily digestible prescription diet for a few days.

If a dog throws up until their stomach is empty and then continues to retch, they will throw up yellow bile - but it's better to take them to the vet before they progress to that point.