Can cats drink milk?
Milk is not recommended for cats. Despite the classic image of a cat lapping up milk, most adult cats are lactose intolerant.
The milk myth
The idea that cats love milk dates back centuries, when cats lived on farms and drank fresh milk. Cats do enjoy the taste of milk because of its fat and protein content. But liking it doesn’t mean it’s good for them.
Why can’t cats tolerate milk?
Kittens produce the enzyme lactase, which digests lactose from their mother’s milk. As they grow and are weaned, most cats stop producing lactase. Without this enzyme, lactose goes undigested and ferments in the gut.
Symptoms of lactose intolerance
After drinking milk, an intolerant cat may show symptoms within hours:
- Diarrhea
- Vomiting
- Gas and bloating
- Discomfort and stomach pain
- Dehydration (in cases of severe diarrhea)
Types of milk and their risks
| Type | Safe? | Notes |
|---|---|---|
| Whole cow’s milk | No | High lactose content |
| Skim cow’s milk | No | Same amount of lactose |
| Lactose-free milk | With caution | Can be offered in small amounts |
| Goat’s milk | With caution | Less lactose, but still present |
| Plant milk (soy, almond) | Not recommended | Not nutritious for cats, may have additives |
| Cat-specific milk | Yes | Formulated lactose-free, with taurine |
Safe alternatives
- Cat milk: found in pet stores, lactose-free and enriched with taurine
- Fresh water: always available — it’s all your cat needs for hydration
- Unseasoned chicken broth: diluted in water, can encourage hydration
- Wet food: helps with hydration and cats love it
What about kittens?
Orphaned kittens should never be given cow’s milk. Use:
- Kitten milk replacer (found in pet stores and vet clinics)
- In emergencies, consult a veterinarian immediately
When is milk acceptable?
Some adult cats retain the ability to produce lactase and tolerate small amounts of milk without issues. If your cat has never shown symptoms, an occasional tablespoon may be acceptable. But it should never replace water in their diet.
This article is informational and does not replace a veterinary consultation. Every cat is unique and may have specific dietary needs.