This PhD project utilizes Zooarchaeology by Mass Spectrometry (ZooMS) to investigate and reconstruct faunal profiles from diverse archaeological habitation sites across Eurasia, spanning from prehistoric Mongolia and the Afanasievo-associated Siberia to medieval Silk Road sites in Uzbekistan. The primary objective is to gain insights into the spread of dairy pastoralism throughout Eurasia. The Afanasievo culture represents an important pastoralist society in the Eurasian steppe, while the Silk Road sites served as crucial hubs for trade and cultural exchange between East and West. By examining changes in the prevalence of domesticated animals associated with dairy production, such as cattle, sheep, and goats, this research aims to discern patterns in the adoption and diffusion of dairy pastoralism across Eurasia.