Is it okay to give milk to a cat?

Cats are mammals and initially feed their young with their own milk. However, as they grow older, cats, like humans, lose the ability to digest the lactose contained in milk. And the milk protein casein can provoke an allergic reaction in pets.

However, this does not mean that cats should not eat milk at all. They can treat themselves to a small amount of milk, but sometimes, not on a regular basis.