Good nutrition is as important to your cat's health as it is to your own. But cats' nutritional needs are quite different from ours. While a human diet should be high-fibre and low-fat, a cat needs a high-fat diet – for energy and a thick, luxurious coat – and less fibre for good intestinal health.
Even if you prefer a vegetarian diet, cats don't tend to thrive on meatless meals. Domestic cats are carnivores, just like their big cat cousins, and require animal protein and animal fat for a healthy digestive tract. Cats also need carbohydrates for energy.