Hello- I joined this site just so I could get some help to this question- so please help! I have a very fat cat....21 pounds to be exact. I received her (Corey) from a family that said she had thyroid problems when she was 9- which is what caused the weight problem. Anyways she has loved living with me for about a year now, and she still loves to eat. She eats all diet food, but I have NEVER had an issue with her not wanting to eat. For the past few days she has been throwing up stomach fluid, and she will NOT eat anything, or drink anything. DOES ANYONE HAVE ANY IDEA WHAT COULD BE WRONG WITH HER??