They will be 11 years old on March 1. Maguffin has had severe health issues in the past--he has significant asthma (requiring daily Flovent steroid inhaler administration), idiopathic cystitis, and was diagnosed with Diabetes a few months ago. Maguffin is quite fat but has settled nicely on a dosage of 6 units of Prozinc. Duffy has been absolutely healthy until he exhibited the dreaded urine/litter cement between his toes, about four months ago. Duffy is currently in the hospital (cat clinic) with diabetic ketoacidosis. His usual dosage is 4 units of Prozinc every 12 hours. The last week or so he started jerking violently when I tried to give him insulin, leaving a wet patch and therefore no way for me to know how much insulin was going in. His eating, drinking, and behavior was normal until yesterday when he seemed abnormally tired. He ate last night but sat for a long time in front of his bowls. We had an appointment already set this morning to address his pulling his fur out, but by the time we got to the clinic he was clearly in trouble. He almost fell when the doctor put him on the scale. The doctor called me tonight saying that he was more alert and had walked a little bit after getting gradual but persistent hydration. I don't have copies of their labs, but will ask for them to be emailed to me.