Q. My 10 month old cat is vomiting yellow foam, not pooping or urinating,not eating, and acting very lethargic & drooling. What could be the problem?
DR. MASSIMO ORIOLES, DVM, MRCVS
A. Unfortunately there are a variety of possibilities that can cause these signs.
From what you are describing, It seems like the problem may be in the gastrointestinal system, or a systemic disease which is causing these secondary signs. An intoxication is possible (especially for the drooling, lethargy and vomiting).
Given the clinical signs, I would strongly recommend to take him to your veterinarian as soon as possible.