Milk is a white liquid, made inside an animal’s body. It contains lots of nutrients that are important for growing and being healthy, so milk is an important food/drink for babies and young animals. But not all animals can make milk: those that do belong to a group called ‘mammals’.
Human beings (like you and me) are mammals, and human babies drink milk as their only food for the first few months of their lives. My children are amazed to think that they drank milk that I made with my body and they want to know: how do mummies make milk?
So, let’s find out more about how mammals work…!