10,000 years ago, the European forests were inhabited by huge cattle with protruding horns: the aurochs. Then man began to domesticate them and created the cow. By crossing species, he adapted the animals over time so that they increasingly met his needs and desires. Industrial livestock farming was born. From then on, beef cattle and dairy cows such as the Holstein cow were bred. Milk production tripled within a few decades. Today, the cow of the future is produced by artificial insemination. By selecting a few breeding bulls that are considered to be top bulls, rapid genetic progress is ensured.