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Updated on September 23rd, 2025
Pet's info: Cat | Mixed Breed | Male | neutered | 18 lbs
I gave my cat a can of tuna yesterday and he was fine. I just gave him another can of tuna this morning and he threw it up and than threw up 4 more times, but it was liquid foamy like stomach bile. What's wrong? He seems better now about 20 minutes later, but would like to know what happen or a cause.
2 Answers
Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS
Veterinarian
Published on August 19th, 2017
Answered By Ann Dion, DVM
Veterinarian
Hello and welcome to Petco Pet Education Center, formerly Petcoach. Tuna, especially if in oil, can be too rich and oily for the digestive system of a cat. If Jinx is acting normally and eating normally now then I would just monitor Jinx, and would avoid feeding tuna in the future, or at least in that form. If he continues to vomit he could have a gastritis, or could have a blockage in his GI tract. Also, you have noted that Jinx is 18lbs. If this is accurate this is a very high weight for a cat, and the vomiting could be due to diabetes. If this is the case then having Jinx seen by a vet right away is recommended. Best of luck with Jinx!
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