Diabetes mellitus is a common disease of dogs and cats. Diabetes mellitus occurs when insulin-secreting cells of the pancreas are destroyed and the body is no longer able to regulate glucose (sugar). This results in high levels of glucose in the blood and urine. Learn more about diabetes mellitus in dogs and cats and how this disease is diagnosed, treated, and monitored in veterinary patients.
1. Symptoms of Diabetes Mellitus
Some of the symptoms seen with diabetes mellitus may be erroneously explained as "getting older" or "it's hot outside," but these are signs that shouldn't be ignored. The symtoms of diabetes are also seen with several other common diseases. Learn what to look for and when it is time to see the vet.
2. Diagnosing Diabetes Mellitus
A dog or cat that is suffering from diabetes typically has certain symptoms, such as always being thirsty, urinating more than normal, eating more than usual or losing weight. The primary test to diagnose and monitor diabetes mellitus is blood glucose, but elevated blood glucose levels may be seen in other conditions as well.
3. Diabetes Mellitus in the Cat
Diabetes in cats is the second most common endocrine disease seen in cats. Diabetes mellitus tends to occur most often in middle-aged cats though it is possible to see the disease in younger cats as well.
4. Diabetes Mellitus in the Dog
Diabetes mellitus is a common condition in dogs. Canine diabetes mellitus is usually insulin-dependent and treatment requires insulin injections, often given twice daily.
Diabetes tends to be seen most commonly in middle-aged dogs but it can occur younger in some breeds, such as the Golden Retriever and the Keeshond.
5. Monitoring Diabetes in Pets
Careful monitoring of your dog or cat's blood glucose levels can provide the information needed to guide treatment decisions, such as whether a change in the dose of insulin is needed or not.
6. Hypoglycemia and the Diabetic Pet
Hypoglycemia occurs when the blood glucose (blood sugar) level falls to an abnormally low level. Hypoglycemia is a potential complication for any diabetic dog or cat, and is potentially life-threatening.
7. How to Do a Blood Glucose Curve
A blood glucose curve is an essential part of evaluating a diabetic pet's progress and health. Your veterinarian may ask you do a blood glucose for your pet at home for several reasons.
8. The Somogyi Effect
Canine and feline diabetes is a disease that results in an abnormal increase in blood glucose levels. When treated with insulin, the blood glucose levels are decreased and, hopefully, kept within the normal range.
Insulin overdose, however, is possible and can lead to a phenomenon known as the Somogyi effect.
9. Treating Diabetes Mellitus in Cats
Feline diabetes mellitus is one of the most common endocrine diseases seen in cats. With early diagnosis and adequate treatment, some cats may even enter a state of remission and no longer need to be treated.
10. Treating Diabetes Mellitus in Dogs
Dogs with diabetes mellitus usually have what is known as insulin-dependent diabetes. Insulin injections are almost always required in the treatment of canine diabetes. However, there are other considerations in treating your dog for diabetes as well.











