My cat vomits daily after food change; why does wet food make him ill?

Question

My cat has been vomiting nearly everyday for a few days. At first we thought it was the food, it was Rachel Ray Nutrish and I know someone who’s dog had a bad reaction to that food (their vet said not to feed it to any of their dogs again as well), so I switched it to a trusted brand (Pure Balance) within a couple days. He’s still vomiting but when I fed him canned tuna he was fine. I fed him wet food and only minutes after he vomited. He doesn’t vomit as many times a day now but still does it. Pet's info: Cat | American Shorthair | Male | neutered | 1 year and 1 month old | 15 lbs

Sarah Derksen, DVM · Accepted Answer

Hi. Poor Bast. This amount of vomiting is very concerning and I recommend an immediate visit to the ER, or very first thing in the am when your veterinarian opens. Vomiting can occur from infection, parasites, something he ate that he shouldn't, or even something he ate stuck in the intestines. Withhold food for 12 hours.

My cat vomits daily after food change; why does wet food make him ill?

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