Diabetes mellitus in cats is increasingly common, linked to obesity and indoor sedentary lifestyles. With proper management, many cats achieve remission and good quality of life.
Feline diabetes causes significant welfare compromise when unmanaged but can be effectively controlled with committed owner involvement. The key welfare consideration is quality of life both from the disease and the management burden. Twice-daily injections require routine but most cats tolerate this well with proper technique and positive association training. Dietary management — transitioning to low-carbohydrate, high-protein wet food — is often the most impactful single intervention and may alone achieve remission in early cases. Hypoglycaemia from insulin overdose is a life-threatening welfare emergency requiring owner education and clear emergency protocols. Regular monitoring using home glucose testing or continuous monitors prevents both underdosing and overdosing. Cats achieving remission have excellent quality of life; those requiring long-term insulin management can also live well with attentive care.