Cats that don’t feel well often eat less, losing weight if it goes on long enough. But what if your cat’s getting thin in spite of a good appetite?
There are several feline medical problems that can cause weight loss — or worse — despite normal eating patterns. One is diabetes, because it causes cats to break down fat and protein instead of using sugar for energy. Another is hyperthyroidism, which is common in older cats. Cancer can also be the culprit. Less common, a malabsorption / maldigestion disorder can cause cats to shed weight in spite of a ravenous appetite.
Any of these conditions often cause other symptoms too, which you’re likely to notice. But don’t sit on it — schedule a veterinary checkup if your kitty’s weight loss is unintentional or you have other concerns.