I'm debating whether or not to take my Spookie to the vet she's been throwing up about once a week. Today she threw up in the foyer. The vomit was totally undigested canned food with a 3 inch long 1/2 inch wide turd in it. Is this normal cat behavior? I had switched her dry food a few weeks ago to Beyond ,thinking of switching back to the Sensative Systems again. When would she require a vet visit? Her behavior seems normal at this time.