Cats are obligate carnivores. That's not a preference. It's biology. Their bodies require nutrients that only come from animal tissue, and a diet that doesn't reflect that will quietly cause problems over time.

What actually matters in a cat food

The brand matters less than most people think. What matters is what's in the food. Here's what to look at.

Protein source. A named animal protein should be the first ingredient. Chicken, turkey, salmon, beef. "Meat by-products" or corn as a primary ingredient is a sign to look elsewhere.

Moisture content. Cats evolved getting most of their water from prey. Dry kibble is only about 10% moisture. Wet food is around 75%. Cats fed exclusively dry food often don't drink enough water to compensate, which puts long-term stress on their kidneys. A mix of wet and dry, or primarily wet, is what most veterinary nutritionists recommend.

Life stage formulation. Kittens, adults, and seniors have genuinely different nutritional needs. A food labeled "all life stages" is formulated to meet kitten requirements, which means it's higher in calories and certain nutrients than an adult cat needs. It's not harmful short-term, but it's not optimal long-term either.

A few things worth knowing

Grain-free diets became popular based on the idea that grains are unnatural for cats. Cats don't need grains, but there's no strong evidence that grains harm them either. What matters is the overall protein and moisture profile, not whether the food contains rice or oats.

Raw diets are a legitimate option but come with real food safety considerations, for both your cat and your household. If you're considering raw, talk to your vet first.

How much your cat should eat depends on their weight, age, activity level, and whether they're spayed or neutered. The feeding guidelines on the bag are a starting point, not a prescription. Your vet can give you a number that's specific to your cat.