My 8 yr old Maine Coon, Ozzy was diagnosed last Tuesday. He had been pottying on the floor, stopped grooming himself and just wasnt acting right. Vet visit revealed BG over 400, elevated WBC, crappy CXR, "strange" fat deposits, irritation in part of his bowel and an irritated ear. Whew! Vet said to continue feeding him dry Purina Pro Plan, give him 2 units of Humulin N and come back in 2 days. Thur, BG 343, I asked about switching to canned food, she said "if you want". I did. Researched and found low carb brands. Sat bought a glucometer to check him. So far: Sat BR @ 7am, BG @ 2pm 122; Premeal BG 171 (held insulin for tonight) Sun: 6am Premeal 211, feed BR & gave 2 u, rechecked BG @9am 309; 6pm Premeal 213, feed supper....should I give him any insulin?, if so how much? I found a scale but it is for Levimir or Lantus not Humulin.