"Sudden vomiting" is a phrase used to describe the act of unexpectedly and forcefully throwing up or expelling the contents of one's stomach through the mouth. Full definition
Often, owners take their dog to the veterinarian with the complaint of sudden vomiting because they did not see the dog consume the arsenic compound. (raisingspot.com)
This condition affects their digestive system negatively and may cause sudden vomiting. (allstarpetresort.com)
She started sudden vomiting and lethargy and was taken to vet where she had to be put to sleep. (askavetquestion.com)