Cause
There are numerous causes of vomiting. Some examples include motion sickness, drugs, and overeating. Obstruction of the gastrointestinal tract by a swallowed piece of string or other foreign body will cause vomiting. Vomiting occurs with inflammatory bowel disease and parasitic infestation in organs such as the kidney, liver, and pancreas.   A veterinarian should be consulted for questions about any potential causes of vomiting.