Can Cats Eat Milk?

In moderation Only in small amounts

Milk is okay only in small amounts for cats. Cats lack the enzyme to digest lactose, so cow's milk often causes diarrhea; best avoided despite the myth.

How to serve milk to cats

Offer only a small amount, and not every day. Introduce it slowly the first time and watch for soft stools, gas, or a change in appetite over the next 24 hours. When in doubt, give less.

The right everyday diet for cats

Cats are obligate carnivores — a complete, balanced cat food should be the core of the diet, with any extras kept small and occasional. Foods like milk are extras, not a substitute for a proper diet.

Frequently asked questions

Can Cats Eat Milk?

Sometimes. Cats lack the enzyme to digest lactose, so cow's milk often causes diarrhea; best avoided despite the myth.

How much milk can cats have?

Only a small amount, occasionally — not every day. Introduce it slowly and watch for any digestive upset over the next 24 hours.

Is milk safe for cats?

Cats can eat milk in small amounts occasionally. Cats lack the enzyme to digest lactose, so cow's milk often causes diarrhea; best avoided despite the myth.

Source for this rating: ASPCA ↗. This is general guidance, not veterinary advice — always confirm with your own vet, as every animal is different.

Can other pets eat milk?

More foods for cats

See the full list of what cats can and can't eat →

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