Q. My 6mo old German Shepherdisn't eating. When she does eat, she regurgitates. She's losing weight. We changed her food about a week ago. What's wrong?
A. Regurgitation is a very specific sign (it is not vomiting) which is usually related to oesophageal disease ( for example weakness of oesophageal muscles). If your dog is truly regurgitating you should take her to your vets for examination, chest/abdomen radiography and maybe endoscopy. Vomiting is a different problem which could be due to several diseases which also should be investigated by your local vets.