Hope sweet Ritz is feeling better!! My guys have all been upchuckers, except one. Sometimes from furballs, or eating too much or too fast. Sometimes just a little saliva or undigested food. Now I stick to a dry only diet, except for a special "wet treat" now and again. Like us humans, I'm sure their tummy's are subject to the occasional upset too! If ever I'm too concerned, I never hesitate to "bug" my wonderful vet, Dr. "Paul." Hugs and purrrs to Ritz!