My poor 10 year old cat was diagnosed with diabetes today. He has had thyroid problems all his life too. Does anyone have experience with feline diabetes? He's going to the hospital on Wednesday for two or three days so they can begin his insulin treatment and monitor him. Thereafter I will need to give him daily insulin injections myself. I am so very sad for him. He is so affectionate, but doesn't seem to be quite himself. He seems despondent. I've felt for a little while that something wasn't right with him. If anyone has any experience with this disease in cats I would appreciate your comments and thoughts.