Milk for cats: tradition and suitability
The familiar saucer of milk is not a substitute for water.
Evidence: Veterinary welfare guidance cautionsPets & animalsProfessional review pending
The household handbook
Ingredient
Also known as cow's milk, milk, dairy milk.
These entries mention cow’s milk. Being listed here does not mean every use is safe or supported — some entries exist to record that a traditional use should be avoided.
The familiar saucer of milk is not a substitute for water.
A comforting ritual; the milk itself probably isn’t enough to cause sleep.