The tendency for modern, large-scale animal production systems to change faster than species can adapt is the major challenge for domestication today. As humans become more aware of the biological similarities of all domestic species, and the psychological capabilities of domestic animals, ethical issues gain a higher profile. Abandoning a relationship that has been thousands of ears in the making and that has been a major influence on human health and society is not an option. Domestication remains a dynamic, high-profile aspect of human life.