Should I feed milk to my kitten?
Milk is a food and not a substitute for water. As a food, milk is incomplete and does not provide a balanced diet. Milk contains lactose, which requires the enzyme lactase for breakdown in the intestinal tract. If the intestinal tract does not contain sufficient lactase, consumption of a high level of lactose can cause diarrhoea in some pets.
Read more about food and nutrition for your cat.