Humans not only have animal ancestors, shared with modern primates, but, since prehistorical times, have also coexisted and evolved alongside several animal species to adapt to environment. Animals have followed their owners during migrations and the gradual living displacement from rural areas to cities. Animal breeding was soon flanked by domestication, to provide protection and help people in every day civil and military life, then company, and finally, to animal application to activities aimed at safeguarding human life and health, thus creating privileged bonds.