Diabetes Mellitus in Dogs

High Risk Endocrine

Diabetes Mellitus is a high-severity endocrine condition that can affect dogs of all ages and breeds. Canine diabetes mellitus is a metabolic disease caused by insufficient insulin production (type 1-like) leading to persistent hyperglycaemia. Unlike cats, dogs rarely achieve remission and require lifelong insulin therapy. It is documented across 6 breeds, though prevalence and severity can differ significantly between them. It typically becomes apparent at 7-9 years. Early signs to watch for include increased thirst, frequent urination, weight loss despite normal appetite, and cataracts (secondary). When treatment is required, costs are estimated at £1,500-£4,000/year depending on severity, location, and the specific intervention needed. This page covers symptoms, treatment options, and preventive steps — along with breed-specific information where available.

Signs & Symptoms

The following symptoms are commonly associated with Diabetes Mellitus in dogs. If your dog displays several of these signs, consult your vet promptly — early diagnosis typically leads to better outcomes.

  • Increased thirst
  • Frequent urination
  • Weight loss despite normal appetite
  • Cataracts (secondary)
  • Lethargy
  • Recurrent infections

Treatment Overview

Twice-daily insulin injections aligned with meals form the cornerstone of treatment. Consistent diet and exercise routines are essential. Regular glucose curve monitoring guides dose adjustments.

Typical onset: 7-9 years

Prevention & Screening

While not all cases of Diabetes Mellitus can be prevented, the following steps reduce risk or enable earlier intervention:

  • Maintain healthy weight
  • Spay females as progesterone worsens insulin resistance
  • Avoid prolonged corticosteroid use

Estimated Treatment Cost

Treatment for Diabetes Mellitus is estimated at £1,500-£4,000/year, depending on severity, the specific intervention required, and your location. Costs may be higher for surgical procedures or ongoing management. Comprehensive pet insurance covering this condition is strongly recommended.

Breeds Affected by Diabetes Mellitus

The following 6 breeds are documented as being susceptible to Diabetes Mellitus. Click any breed to view breed-specific information about this condition, including prevalence and recommended screening.

Looking for more information? Browse all dog health conditions or explore the health guides for in-depth breed care advice.