To confirm diabetes mellitus, your veterinarian will measure the glucose in your pet's urine and blood after your pet has been fasted. In fact, if you are bringing your pet to the vet for any illness, it's a good rule of thumb to fast your for dog 24 hours. A high amount of glucose indicates that diabetes mellitus is likely. Diabetes mellitus pets are a perfect example of famine in the midst of feast. Pets with this type of diabetes have a greater tendency to develop urinary tract infections.
Bacteria like to grow in dark sugary places.
The eye also requires insulin to work. Without insulin, the eye may develop cataracts within a matter of days to weeks. Cats, however, do not get cataracts from diabetes mellitus. There is no cure for diabetes in humans or animals. Treating diabetes requires a firm commitment on the part of the owner.