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My cat's weight loss seemed gradual. Two pounds over three months — nothing dramatic. The vet called it 'normal aging.' I accepted that assessment until a second opinion revealed hyperthyroidism, treatable with medication but damaging if left unchecked. By the time I sought the second opinion, my cat had already lost muscle mass that wouldn't fully recover.
Weight loss in cats deserves investigation regardless of how gradual it appears. Healthy adult cats maintain stable weight within a narrow range. Changes of 5-10% warrant veterinary evaluation, even without other symptoms. The 'wait and see' approach that works for minor issues becomes dangerous when applied to weight loss.
Appetite changes matter too. Increased hunger with weight loss suggests hyperthyroidism or diabetes. Decreased appetite points toward dental disease, kidney issues, or gastrointestinal problems. Either extreme deserves attention, not observation over weeks.
Water consumption changes often accompany metabolic disorders. Cats drinking significantly more or less than their typical amount should be checked, especially when weight or appetite also shift. These three indicators — weight, appetite, water — form a triad that reveals problems earlier than any single sign.
Second opinions aren't distrust — they're due diligence. When something feels wrong but the initial assessment seems reassuring, a fresh perspective can catch what routine examination misses. My cat's hyperthyroidism would have progressed further without that second consultation.