My cat stopped eating, is lethargic, losing weight, and feels warm.

I’m so sorry that Bell isn’t feeling well! Lack of appetite, loss of energy, and possible fever can be caused by many conditions including infections, foreign bodies, certain cancers, urinary blockage and others. I recommend having Bell seen by a vet to determine what is going on and receive appropriate treatment. Your vet will begin with a physical exam and likely recommend further diagnostics such as bloodwork and X-rays if needed. Cats who don’t eat can get very sick over several days because of abnormal fat metabolism by their liver, so it is very important to have Bell seen as soon as possible. I hope all is well!

I am worried about Yoda as well. From what you are telling me, he is showing you that he is sick, and he has lost a lot of weight. He needs to see a vet now. Please take him 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.

Poor Uncle Fester. Thanks for more information on it. If you are really worried about it, and I understand why you are, there's no harm in taking him into an ER vet. He may need intensive care. I recommend doing that now.

Hi, thanks for using Petco Pet Education Center, formerly Petcoach! I am so sorry Princey is sick! I would get him to your Vet tomorrow. Bring a stool sample. Possible causes for weight loss and not eating in a young cat are: foreign body, intestinal parasites, feline leukemia, FIP (feline infectious peritonitis), toxin ingestion, or even cancer. Your Vet may do blood work, feline leukemia test and X-rays. The tests will be based on their physical. I wish you and Princey the best of luck and I hope he gets better soon!

Oh dear! Poor Prince. I'm afraid these are very concerning symptoms. This does sound like a life-threatening problem, so I would recommend taking him to an emergency vet tonight to be seen. If this isn't possible, then he needs to see your regular veterinarian first thing in the morning. He will likely need blood work and x-rays to help diagnose the problem and see what can be done to help.

This is very concerning and may not related to progressing kidney, thyroid disease or diabetes. An urgent vet check and urine and blood tests is recommended. Do not delay investigation as early treatment is required

It sounds like Kara may be pretty unwell. There are so many potential causes for her to act this way - it can be very concerning when a cat stops eating, sometimes it is due to a fever. Please take her for a veterinary exam as soon as possible to try to determine what could be wrong. Your vet may suggest tests like blood work and xrays to determine the cause of her illness. They will be able to ask you more questions to narrow down a diagnosis. Hope Kara feels better soon!