A. it does sound like regurgitation indeed. Regurgitation can be caused mainly by a condition causing esophageal mobility reduction or enlargement/constriction of the esophagus. Those diseases are usually bad news. Another option would be something stuck in the esophagus or the stomach. An unlikely parasitic infection called spirocerca lupi also causes this symptom, but unless you are from south africa or israel it is very unlikely. Go to the vet and he will probably advice an Xray to try to find out what is the problem.
A. Differentiating between vomiting and regurgitation can help your vet reach a diagnosis. Vomiting is an active process while regurgitation is not. When a dog vomits, you will see the stomach working and contracting, the back may be hunched and the neck extended as the food is forcefully ejected. Food that is regurgitated simply spills or flows from the esophagus when your dog lowers its head. An exam and xrays may be helpful in the diagnosis of conditions such as megaesophagus or even a foreign object in the stomach. Bloodwork may show metabolic disease or even pancreatits. Withhold food for 12-24 hours. Allow small amounts of water or unflavored PediaLyte. Resume feeding a bland diet (1:1 ratio of plain boiled boneless chicken and plain white rice). Feed in small, frequent amounts waiting at least one hour between feedings and elevate the food bowl. If the vomiting stops, continue feeding until the stool is normal. Transition slowly to the regular diet. If not, recheck with your veterinarian.
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