Diabetes in Dogs and Cats

Diabetes mellitus

A common endocrine disorder in which the body either doesn’t produce enough insulin or can’t use it effectively, leading to persistently high blood glucose. Affects both dogs and cats, though the underlying type typically differs by species.

Symptoms

  • Increased thirst and urination
  • Increased appetite paired with weight loss
  • Lethargy
  • Cloudy eyes/cataracts (especially common in diabetic dogs)
  • Weakness in the hind legs (more typical in cats)
  • Vomiting or lack of appetite, which can signal diabetic ketoacidosis, a medical emergency

Causes

  • Dogs: typically Type 1-like, where insulin-producing cells are destroyed, often due to autoimmune disease or chronic pancreatitis
  • Cats: typically Type 2-like, involving insulin resistance, strongly linked to obesity
  • Genetic predisposition in certain breeds of both species
  • More common in middle-aged to older, female dogs and in overweight cats

Treatments

  • Daily insulin injections in most cases
  • Consistent diet and feeding schedule to help stabilize blood sugar
  • Low-carbohydrate diets, especially helpful for cats
  • Weight management and regular exercise
  • Routine blood glucose monitoring and veterinary checkups
  • In cats, diabetes can sometimes go into remission with early treatment; in dogs it’s typically a lifelong condition

This condition is common in the following Dogs & Cats

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