There are many reasons for vomiting in Australian Shepherds, among which the common reasons are as follows: Australian Shepherds eat too fast and too hastily, eat a large amount at one time, and lumps of food get stuck in the dog's intestines and stomach, causing the intestines to be unable to digest or Vomiting; the Australian Shepherd has severe inflammation in its body and is infected with viral diseases. If the Australian Shepherd vomits due to illness, the owner should send the dog to the pet hospital in time.