The Authority Suite
Dairy
Milk: Safe for Dogs and Cats?
CautionDogs
Most adult dogs have reduced ability to digest lactose, so milk can cause digestive upset; small amounts are usually tolerated but a full bowl is not recommended.
Toxic principle: Lactose intolerance from reduced lactase enzyme after puppyhood
Watch for
- Vomiting
- Diarrhea
- Gas
- Bloating
- Abdominal pain
Sources
Reviewed 2026-07-12
CautionCats
Most adult cats are lactose intolerant and cow's milk commonly causes digestive upset, so it should not be offered as a regular food or water substitute.
Toxic principle: Lactose intolerance common in adult cats
Watch for
- Diarrhea
- Vomiting
- Upset stomach, typically within 8 to 12 hours of drinking milk
Sources
Reviewed 2026-07-12
This page is for informational purposes only and is not veterinary advice. Always consult your veterinarian about your pet's diet and health.
Read our methodology for how every verdict is sourced and reviewed.