We are getting him all the help my vet can offer... He gets Metacalm drops for the pain/to stop spasms and Cystease capsules for the PH balance, as well as a special urinary diet. The tumour takes up 1/3 of his bladder and we've been told he has less than a year to live, as the tumour may have seeded elsewhere.

He seems well and happy, and we take him to the vet at the first signs of any ill health.

Am I really doing all I can, though? The vet does not want to operate, and the expense is already considerable. Any suggestions?

All i can say is do not let it suffer dont forget animals can not tell you when they are really suffering...