My cat had severe vomiting & diarrhea, now napping. ER vet or wait?

Poor Binx! Yes, this is a vet visit when a cat is both vomiting and having diarrhea as well as being very lethargic. I'm concerning he's throwing up water as well, and that can quickly lead to dehydration. Given how suddenly he's become sick and his combination of symptoms, I recommend taking him into a vet right away. Best of luck, I hope this helps!

Oh no, poor Toffee! She sounds quite sick at the moment, and her vomiting and diarrhea could be caused by a GI illness, eating something rotten or toxic, a foreign body, or pancreatitis. I see that she isn't spayed, and her symptoms could also be caused a pyometra, which is a life threatening infection of the uterus. When a cat is having both diarrhea and vomiting, it's time to see a vet immediately to prevent her from getting severely dehydrated and sicker. She does need veterinary attention now, please take her into an ER vet clinic; if there isn't one in your area, there will be a vet on call for emergencies. The information to reach that vet is found on a clinic's answering machine or website.

I'm sorry to hear that Eggy has been vomiting and seeming fussy. In a young cat with sudden vomiting, fussy/abnormal behavior and decreased drinking, she may have a foreign body intestinal obstruction, virus, parasites, pancreatitis, or inflammatory bowel disease leading to her issues. Since she is not drinking well and continuing to vomit, it is likely that she has become dehydrated, so now is the time to take her to the emergency vet. The vet will examine her, perform any necessary diagnostic testing (likely including blood tests and x-rays), and then determine the best course of treatment. I hope this helps and that Eggy feels better soon!

04/06 is a little far, i would say that it would be a good idea to take her to the vet in the next 24 hours, she is very young, diarrhea combined with vomiting at this age can be life threatening pretty fast.

It definitely sounds like BoBo has an upset tummy. I am concerned about the amount of vomiting and diarrhea that you have described. Possible causes for this to happen acutely include bacterial or viral gastroenteritis, pancreatitis, toxic exposure, intestinal obstruction, dietary intolerance or food allergy (this would happen if he ate human food he shouldn't have or if you recently changed food or treats), irritable bowel syndrome, intestinal lymphoma, or other internal medicine issues. I think that BoBo should see a vet as soon as possible to start with bloodwork and maybe x-rays depending on the findings of the physical exam. Before you go, check around the house for anything that BoBo may have chewed on, like hair ties, string, carpet, or chemicals. You are right in not feeding BoBo anything, but encourage him to drink water, chicken broth, or pedialyte to try to maintain hydration. Cats can also get electrolyte imbalances soon after having voluminous vomiting or diarrhea. Depending on test results, your vet may prescribe medications for nausea, diarrhea, or even antibiotics and gastroprotectants. If the bloodwork shows severe abnormalities or the symptoms persist despite medications, BoBo may need IV fluids to rehydrate him and correct electrolyte abnormalities. If you have additional questions I can answer, feel free to choose a consult so we can answer them.

It could just be a GI illness or Coco may have eaten something rotten. It really is best she sees a vet now, but if you cannot get her into a vet today, it can wait until tomorrow as long as she is drinking and acting normally. If she starts vomiting water, stops drinking water, or becomes very lethargic, she has to see a vet right away.

I don't think this require an emergency visit but i would definitely recommend making a sooner apointment for you vet, preferably before the weekend as this sound like a gastrointestinal condition that will require treatment, possibly a course of antibiotics and a change of food.