My cat is lethargic and won't eat. Is it pesticide poisoning?

This is an emergency. If you suspect a pesticide you should call the pet poison control helpline. Otherwise, when I see older animals present this way through the ER I am very worried about abdominal bleeding from a tumor. I would not wait. He should be see by a vet ASAP.

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.

Oh dear, I'm sorry to hear that Joey hasn't been feeling well. Since you suspect that the Seresto collar may have been causing his issues, you did the right thing by taking the collar off and bathing him. However, his lethargy, eye discharge, and loss of appetite could also be due to a virus (gastrointestinal or causing an upper respiratory infection), kidney disease, or many other health conditions. I'm glad to hear that he's going to the vet tomorrow because his vet will be able to examine him and perform any necessary diagnostic testing. In the meantime, continue offering small frequent amounts of Pedialyte or water, as well as trying to tempt Joey to eat with either meat baby foods, boiled chicken breast, or canned cat foods. Warming up any of these foods for a few seconds can make their aroma more noticeable, which can be enticing to some cats. I hope this helps and that Joey feels better soon!

Please take Simon to an out of hours veterinarian or pet ER right now. It looks like he found something toxic. He will need to be hospitalised and treated symptomatically (iv fluids, etc) if you do not know what he could have ingested. Please take him to a vet now.

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.

These symptoms can be caused by a range of diseases, and are often accompanied by severe dehydration. Without an exam and some testing, I can't make a diagnosis, and it is illegal for us to make specific recommendations on medications. You should call your local vet for further advice.

Poor Pisu! It's possible that his liver is still affected, or he has become injured/ill especially if he was extremely ill for a period of time and he ran away again. It is a good idea to recheck bloodwork values and an exam with your vet to see if there have been any changes in his health profile, especially if he still isn't his normal self. Your vet may also recommend a long-term liver supplement or diet change to help him recover as well.