Yesterday I took our DSH, Loki to the vet since she seemed not to feel well - coughing and noisy breathing. After an xray and exam, the vet told me he is certain she has cancer. He feels that chemo is not an option so we are just using steroids to buy her some time. He showed me the xrays and it looks to be advanced - how she got this bad while acting and looking so healthy, I don't know. It just goes to show how well cats can hide illnesses.