Hi I'm after some advice about my cat who is coughing, a wet cough since using catalax, was dry before. He has difficulty in swallowing but eats fine. Has a healthy appetite, senior age. Heart murmurs. No vomiting. No heavy breathing but does get worn out easily. Sleeps and drinks alot of water, no sneezing, no mucus from the nose or eyes. Poo and urine tests are neg to any problems, general bloods came up neg and seem fine also. His body trembles at times which I thought could be related to having a toxic tree in my garden which I'm trying to get removed. Not a hairball issue as I first thought was the reason for the cough.. His purr and upper.. Throat area seems to be where the fluid from the wheeze is located. No weight loss.. Either. Can any one help me with what to do as the vet wants to do more investigation.. Xrays, and cardiopet which is a particular blood test. Then it will be more further tests which is looking to cost me thousands. I'm afraid to just find out he has a tumour which is cancerous or throat cancer .. And again more money which I cannot afford..? Could it be anything not life threatening?