Can Cats Really Drink Milk? The Truth Revealed (2025)

Many cat owners believe cats love milk, often giving them a bowl of dairy with the hope of a purring response. But is milk safe for cats? The short answer: most cats should avoid cow’s milk. While cats are obligate carnivores, their digestive systems often lack sufficient lactase—the enzyme needed to break down lactose, the sugar in milk. As a result, milk consumption can cause uncomfortable digestive issues like diarrhea and vomiting in lactose-intolerant cats.

Why Most Cats Are Lactose Intolerant

Cats produce low levels of lactase, especially after weaning. Unlike human infants, who develop lactase production to digest breast milk, adult cats typically lose this ability. This means even a small amount of milk can trigger gastrointestinal distress. Studies from veterinary journals in 2023 confirm lactose intolerance affects over 70% of adult cats, making regular milk a potential health risk rather than a treat.

The Risks of Feeding Cow’s Milk to Cats

Giving cow’s milk to cats can lead to immediate discomfort and long-term digestive problems. Symptoms include bloating, gas, diarrhea, and dehydration. In severe cases, lactose overload may cause inflammation of the gut lining or secondary infections. For cats with sensitive stomachs or pre-existing conditions, even one serving can be risky.

Safe Alternatives and Best Practices

Rather than milk, provide fresh water daily to keep your cat hydrated. For a creamy treat, try small portions of specially formulated cat milk—available in lactose-free versions from trusted pet brands. These alternatives mimic the nutrition cats need without the lactose risk. Always check with your veterinarian before introducing new foods, especially for older or health-compromised cats.

Final Thoughts: Keep It Lactose-Free for Your Cat’s Wellbeing

While the idea of a milk-soaked purr sounds cute, the reality is that most cats suffer when fed dairy. Prioritizing your cat’s digestive health means steering clear of cow’s milk and choosing safe, vet-approved options instead. Your feline friend deserves meals and treats that support, not strain, their system. Start today by switching to water and lactose-free alternatives—your cat’s tummy will thank you.

Remember: when in doubt, consult your vet for personalized advice on your cat’s diet.