Is Milk & Dairy Toxic to Cats and Dogs?
Milk and dairy are mildly toxic (upsetting) to cats and dogs — most are lactose intolerant and develop diarrhea. Large fatty amounts can trigger pancreatitis.
Usually minor, but watch for symptoms.
Usually minor, but watch for symptoms.
In an emergency, do not wait.
Medical disclaimer: This tool is for general information only and isnot a substitute for veterinary diagnosis or treatment. Toxicity depends on the amount, your pet’s size, and health history. If your pet may have ingested something harmful, contact your veterinarian or a poison control hotline ((888) 426-4435 / (855) 764-7661) immediately — do not wait for symptoms to appear.
What is Milk & Dairy?
Milk and dairy are mildly toxic (upsetting) to cats and dogs — most are lactose intolerant and develop diarrhea. Large fatty amounts can trigger pancreatitis.
Also known as: milk, cheese, cream, lactose, ice cream, yogurt.
Symptoms to Watch For
🐕 In Dogs
- Diarrhea and gas from lactose intolerance
- Stomach cramps and bloating
- Pancreatitis risk from high-fat dairy in large amounts
🐈 In Cats
- Diarrhea and stomach upset (most cats are lactose intolerant)
- Gas and reduced appetite
What to Do If Ingested
- Withhold further dairy.
- Ensure access to fresh water.
- Watch for diarrhea over the next day.
Steps apply to both cats and dogs. When in doubt, call a vet or poison hotline before acting.
When to Call the Vet Immediately
Call your veterinarian or a poison control hotline right away if you notice any of these:
- Severe or bloody diarrhea
- Vomiting or belly pain
- A large amount of high-fat dairy was eaten
Frequently Asked Questions
Frequently Asked Questions
Can cats drink milk?
Most adult cats are lactose intolerant, so cow's milk commonly causes diarrhea and stomach upset. The "saucer of milk" image is a myth — water is the better choice. Small amounts of plain yogurt or lactose-free milk are less likely to cause issues.
Is cheese bad for dogs?
Small amounts of low-lactose cheese are usually tolerated, but many dogs are lactose intolerant and get diarrhea from dairy. High-fat cheeses in large amounts can also trigger pancreatitis. Keep dairy as an occasional tiny treat at most.
Why is dairy listed as a toxin if it is only mild?
Dairy is not acutely poisonous, but it reliably causes gastrointestinal upset in lactose-intolerant pets and can trigger pancreatitis in large fatty amounts. It is listed so owners understand the diarrhea and pancreatitis risks.
Sources
This entry is reviewed against the following authoritative veterinary sources.
Last reviewed: 2026-07-11