Since the Stone Age, our babies have had the same needs: Closeness, protection, being carried. They want to be allowed to eat when they are hungry and to sleep when they are tired. But our modern world does not always fit these needs. This bestseller shows how parents can still do justice to their children's biological primal program: concrete, encouraging, undogmatic, sustainable - and now in an updated and expanded version. In a contemporary and clear way, parents learn everything they need to implement a species-appropriate style of upbringing in their everyday lives. The most important building blocks are a natural birth, breastfeeding and feeding as needed, and babywearing. Cleanliness education that takes the child's signals into account is just as "species-appropriate" as the attachment-oriented view of falling asleep and close contact with nature. Each family can find an individual way with their baby. It's worth it, says successful author Nicola Schmidt: "Every happy child makes the world a better place.