dogs with diabetes- things i've found to help are..
1-homemade diet, i try to avoid commercial dog foods. it's not as hard as you may think. i use my slow cooker to do it at night. there is a wealth of info on recipes via internet.
2-cinnamon- i add a few dashes of cinnamon on the food and it helps to lower blood sugar.
3-biotin- this also helps to lower the sugar. i have 1000 mcg tabs,i just add 1 to the food when i feel he needs it.