How to Read a Cat Food Label

Cat food labels follow the same AAFCO regulatory framework as dog food, but there are meaningful differences in what to look for, because cats are obligate carnivores with different nutritional requirements than any omnivore. Here's what matters most on a cat food label.

The AAFCO Statement

Find the AAFCO nutritional adequacy statement on the back or side of the can or bag. It will indicate the life stage the food is formulated for: "Adult Maintenance," "Growth" (kittens), or "All Life Stages." For a nursing queen or growing kittens, "Adult Maintenance" foods are not sufficient. They don't meet the elevated nutrient requirements for growth and reproduction.

As with dog food, AAFCO statements come in two types: formulated to meet nutrient profiles (computer modeled) and substantiated by animal feeding tests (actual trial). The feeding test standard is more rigorous and worth favoring where available.

Cats Are Obligate Carnivores: What That Means for Labels

Unlike dogs, cats cannot synthesize certain essential nutrients from plant sources. The most important is taurine, an amino acid essential for heart function, vision, and reproduction in cats. All commercial cat foods are required to contain adequate taurine (it won't be listed unless added as a supplement). But this underscores why cats must eat animal protein, not plant-based substitutes, as their primary food source.

Look for a named animal protein as the first ingredient: "chicken," "turkey," "salmon," "beef". Protein percentages in cat food are generally higher than dog food, and appropriately so. A good quality adult maintenance cat food will show 30–40% crude protein on a dry matter basis.

Wet vs. Dry: How Labels Differ

The guaranteed analysis percentages look dramatically different between wet and dry food, and the reason is moisture. A wet food showing 10% crude protein and a dry food showing 32% crude protein may contain very similar protein on a dry matter basis. The wet food is just mostly water.

To compare wet and dry food on the same basis, use the dry matter conversion: divide the nutrient percentage by (100 minus the moisture percentage). A wet food with 10% protein and 78% moisture has: 10 ÷ (100 − 78) = 45% protein on a dry matter basis. That's actually higher protein than many dry foods.

The Calorie Content Statement

As with dog food, the Calorie Content statement is the most important number on the label for feeding accuracy. It appears as kcal/kg and often kcal/cup (dry) or kcal/can (wet). Use this number in the cat feeding calculator to find out exactly how much food to put in your cat's bowl.

Wet cat food typically provides 150–200 kcal per 5–6 oz can. Dry cat food typically provides 320–480 kcal per cup. A single-protein 3 oz can may provide only 65–100 kcal. These differences are enormous. Using generic feeding guidelines without knowing the specific calorie content is a reliable path to overfeeding.

Wet Food vs. Dry Food: Beyond Calories

One of the most important considerations for cats that doesn't show up on any label: cats are descended from desert predators who obtained most of their water from prey. Their thirst drive is relatively low compared to dogs and humans, and they often don't drink enough water to compensate adequately when eating dry-only diets. Many veterinary nutritionists recommend including wet food, particularly for cats with a history of urinary tract issues, kidney disease, or constipation.

The caloric density of dry food means a small volume contains a lot of calories. If your cat is overweight and eating only dry food, this may be part of the equation.

Key Label Sections at a Glance