moderate urgency

Weight Loss in Dogs & Cats

Unintentional loss of body weight. Often indicates chronic disease, especially if appetite is maintained.

Common Causes

  • Hyperthyroidism (cats)
  • Diabetes
  • Cancer
  • Kidney disease
  • Intestinal parasites
  • Malabsorption

Red Flags

  • Rapid weight loss
  • Eating well but losing weight
  • Muscle wasting
  • Vomiting or diarrhea
  • Increased thirst

When to See a Vet

If weight loss is noticeable (>10% body weight) or progressive, especially with maintained or increased appetite.

🐕 Weight Loss by Dog Breed

🐈 Weight Loss by Cat Breed

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