Okay. So I have three cats at home. One 4.5 year old and two maybe 6 month old kittens. A few weeks back, my oldest was puking and one of the cats was pooping outside the litterbox (my assumption was it was also my oldest). I took her to the vet, and he couldn't find much of anything wrong with her. He didn't suspect any foreign objects had been ingested, and she was perfectly hydrated. He gave her some anti-vomit injection and suggested some prescription food. My older cat vomited again a couple days after the injection. When I got home I realized one of my kittens was also vomiting (he just vomited up a little pile of mucus). So I figured there had to be something in common. Also, all the cats had diarrhea, one of them with a pretty bad bout of it. I realized that I had switched them from Authority to Meow Mix, due to some tight cash (which I now realize is the devil of cat foods, and it has been discarded, never to be seen again). I took it that Meow Mix was the culprit, and gradually switched the cats to just be on the prescription food. Vomiting has since stopped, and the diarrhea has been reduced to a mild case, although it is not completely gone. I'm going to try doing a 12 or 24 hour fast to see if that helps the diarrhea. Anyway, my worry is about my oldest. Although all the cats seem to have the diarrhea, my oldest is the only one showing any weird behavior. The kittens behave completely normal, playing and causing trouble as usual. All the cats are eating, drinking plenty, and doing normal grooming. What I've noticed is different is that my oldest cat is becoming increasingly affectionate. She now sleeps behind the pillow on my bed, and is constantly begging for attention at night, and sometimes throughout the day. Since my vet really expressed little concern about her when I took her in, I'm not sure if she's really not feeling well or if it's for other reasons. We moved three hours away from the home she grew up in about 7 months ago. 3 months ago, I got my two kittens. Since then, the kittens are kept in the basement with me at night, and the past month or so my oldest is also being kept in the basement with both me, and the rambunctious kittens. My cat has become a little aggressive towards the kittens, when she wasn't previously. She never attacks them (she regularly grooms them, actually), but if she is with me she will actively growl, swat, and/or chase any kitten within sight or reach. Then she will return to me. So I was wondering if maybe her increased affection is a jealousy thing, not related to the recent health issues. I just don't want to spend 300 dollars running diagnostics if her behavior is simply a reaction to all the changes in the past months. What are your thoughts? I'm just such a worry wart. And since all three are having the mild diarrhea, I find it confusing that she is the only one with strange behavior. And any advice for the loose bowels? It's improved since the prescription food was started, but the fact that it is still present at all worries me. It cost me 80 bucks for a single visit, so if there is something I can do at home that would save me from paying 500+ dollars in visits and tests for three cats then let me know. If I have to cash out my savings then that's that, I just don't know what to do. I'd feel stupid if I go back to the vet and pay him to say the same darn thing again "nothing feels too wrong, should go away, keep with prescription food". Or maybe I didn't switch from meow mix to prescription food gradual enough, I'm not sure. I really don't think anything bad was ingested. There aren't any chemicals I can think of that they could have gotten, and I haven't noticed any potential hazards being chewed. Sorry for the long post and the back and forth. I'm just at a loss at what I should do at the moment.