Why is my 9-year-old outdoor cat weak, not eating, and lethargic?
Mojo sounds extremely sick. Unfortunately, without examining him, I can't determine the cause of his lethargy and inappetence. Some possible causes include a severe abscess/infection, virus, cancer, among others. Cats that do not eat normally can develop a condition known as hepatic lipidosis (fatty liver disease) which can be quite severe. If he is not drinking normally, he is likely quite dehydrated. At this point, Mojo must be seen by a vet immediately for an exam, diagnostic testing, and may even need to be hospitalized for fluid therapy and other supportive treatments.
Updated on September 23rd, 2025