Diabetes Mellitus in Cats: Welfare Management Guide

Feline Diabetes and Welfare

Diabetes mellitus is increasingly common in cats, affecting approximately 1 in 200 cats in some populations. Well-managed diabetes allows cats to live comfortable, quality lives; poorly managed diabetes causes significant suffering and life-threatening complications.

Pathophysiology

Feline diabetes is primarily Type 2 (non-insulin dependent in early stages), driven by obesity, insulin resistance, and impaired pancreatic beta-cell function. Prolonged hyperglycaemia causes glucose toxicity, further damaging beta cells. Early intensive management can achieve remission in a proportion of cats.

Clinical Signs

Polyuria (excessive urination) and polydipsia (excessive thirst)
Polyphagia (increased appetite) with weight loss
Muscle weakness and plantigrade stance (walking on hocks)
Dull coat and lethargy
Susceptibility to infections (urinary tract infections, skin infections)

Welfare Impacts

Uncontrolled diabetes causes chronic discomfort and energy deficit
Diabetic neuropathy (weakness and plantigrade stance) is painful and functionally limiting
Diabetic ketoacidosis (DKA) is life-threatening and causes severe suffering
Hypoglycaemia from overdosing insulin causes acute crisis and seizures
Frequent injections cause short-term stress; owner-cat bond management is important

Management Strategies

Insulin therapy: Most diabetic cats require twice-daily insulin (glargine/Lantus or ProZinc/protamine zinc insulin).
Dietary management: High-protein, low-carbohydrate diet improves glycaemic control; wet food preferred over dry kibble.
Weight management: Gradual weight loss in obese cats reduces insulin resistance.
Remission: Early intensive management (tight glycaemic control) achieves remission in 25-50% of cats — an excellent welfare outcome.
Home monitoring: Owner glucose monitoring (interstitial or blood glucose) allows dose adjustments and improves control.
Injection technique: Proper training of owners reduces injection stress for cats and owners.
Regular monitoring: Serum fructosamine, urinalysis, weight checks, and clinical assessment.

Key Takeaways

Feline diabetes is manageable and potentially reversible with appropriate treatment. Early diagnosis, dietary management, insulin therapy, and owner education are the foundations of good diabetic cat welfare. The goal of remission should be actively pursued in newly diagnosed cats.