How much protein does a cat need per day?

AAFCO sets a minimum of 26% crude protein on a dry matter basis for adult cats and 30% for kittens and pregnant or lactating cats. In absolute terms, adult cats typically need roughly 4–6 grams of high-quality protein per kilogram of body weight per day, though this varies by life stage, activity level, and health status. Most complete commercial cat foods meet or exceed the minimum.

Can cats eat high-protein dog food temporarily?

Dog food is not appropriate for cats, even temporarily, because it's formulated for a dog's lower protein requirements and typically contains no added taurine. A cat eating dog food as their primary diet can develop taurine deficiency relatively quickly. Occasional tiny tastes are unlikely to cause harm, but dog food should not substitute for cat food.

Is grain-free cat food higher in protein?

Not necessarily. Grain-free foods replace grains with other carbohydrate sources (like peas, lentils, or potatoes) and may or may not be higher in protein than grain-inclusive foods. Checking the dry matter protein percentage -- not just the as-fed percentage on the label -- is the reliable way to compare foods.

Do older cats need more protein?

Many senior cats benefit from highly digestible protein to help maintain muscle mass, even if their total calorie needs decrease. Some research suggests older cats may need as much or more protein than younger adults rather than less, because protein digestibility and absorption can decline with age. This contrasts with an older belief that senior cats should receive lower-protein diets, which is now considered outdated for cats without kidney disease.

Cat Protein Requirements | PetCalculator

Cats need substantially more protein than dogs because of their obligate carnivore physiology. Here's what that means in practice, what AAFCO requires, and which amino acids are non-negotiable.