Why is my cat not eating, hacking, and lethargic after a new kitten?

Congrats on your new kitten, but I'm sorry Eloise isn't doing well. Yes, I would be very concerned that she isn't eating. When cats do not eat going on 72 hours, they develop a fatty liver. A fatty liver is fatal without treatment, so anorexia in cats is considered serious. While bringing home a new cat is stressful for the existing cat, it typically does not cause severe lethargy and anorexia. I would be concerned that Eloise is sick, and I would take her into a vet today for a health check. I hope this helps!

It sounds like he is getting sick. Without additional clinical signs it is hard to say exactly what is causing his lethargy and decreased appetite but he could be starting with a respiratory virus or a gastrointestinal virus. He could also have parasites that need to be treated. If it continues than he should be examined by a vet to determine the cause. Your vet can run lab work to help diagnose and then determine the best way to treat. If he is unvaccinated, please discuss a vaccine plan with your vet once he has recovered from this illness.

It sounds like poor Olive is sick. Anorexia and lethargy can be signs of many illnesses such as a systemic illness, infection, inflammation, or injury. It's actually quite serious when a cat isn't eating, and I would take her into the vet as soon as possible. The vet can diagnose the cause of her symptoms, and can treat her for it. Please take her into a vet. Best of luck.

Your cat could be upset about the kitten but I am concerned about the length of time he has not eaten. Cats can become sick with a disease called Hepatic Lipidosis or "fatty liver" when they start using fat for energy because they do not have any food in their stomach to digest. Piku could be sick from the chemicals, sick from the new kitten even though the kitten is healthy or just be sick from something else. He should be seen by a veterinarian as soon as possible.

No this isn't normal and Scribble has to see a vet immediately. It's extremely serious she isn't eating, as when a cat doesn't eat for longer than 72 hours, they develop a fatty liver which is fatal without treatment. While the stress of having a new kitten can cause a cat not to eat, it shouldn't last this long. I'm concerned there is something more serious going on with her, such as kidney disease, liver disease, dental problems. or even cancer. She needs veterinary care now, please take her into a vet right away.

Yes, it is likely that Jack is upset about the addition of the new kittens. Introducing a new cat into the house is very stressful for an existing cat, especially old cats. I would try to tempt him to eat by offering him small amounts of boiled white meat chicken (no bones), or soaking his food in tuna juice or low sodium gently warmed chicken or beef broth. If he still won't eat with these methods, or it's close to three days since he last ate, I would take him into a vet right away. When a cat doesn't eat for three days or more, they become prone to a fatty liver, which is serious.

I would recommend trying to keep the kitten and older cat separated for now. Than slowly introducing them back to each other. I would make sure that the older cat has a litter box and food some place away from the kitten that way he will feel more comfortable eating. It is very important cats eat every day. If Niko is not eating anything he needs to go see a vet. You can try feliway which is a cat pheromone to help decrease stress in the house too. The reason Niko is acting out is due to stress in the house