Have Cat Questions? Ask a Cat Vet Online.
Hi this is Dr. Hill. So an overweight cat is predisposed to so many things. Diabetes and urinary tract infections are probably the most common. You would start to notice weight loss, drinking more and urinating more if it were diabetes. Cats that cannot groom themselves will get fecal matting around there genitals and are very likely to get an infection. Vomiting can be a sign of a urinary tract infection. We can also see vomiting with intestinal parasites, dietary indiscretions, and a diet that does not agree with them (allergies). I am sorry that the nearest vet is so far away. How long has he been vomiting? Do you know about how much he weighs? Do you feed him twice daily?
Okay. So the first thing I would do is try a different food. You can get most things delivered these days. I really like the natural balance venison for cats. You can order it on Chewy.com. Some cats have sensitivities to certain foods. This is one that I have had lots of success with in my practice. It is canned. Will he eat canned?
If you log back on Monday, you should be able to request a call. I am in Maine. I usually am able to get online around 8 pm on weeknights. Have a nice dinner.