In the high altitude of Bhutan, yak farming is the main livelihood of transhumant pastoralists.However, yak farming is under pressures because of external factors such as socioeconomic developments, policies and climate change. Little is known about the impact of these factors on yak farming, and what policies and interventions might be required to sustain yak farming.Therefore, the aim of this thesis was to assess the impact of external factors and management on yak farming in Bhutan, with a focus on past developments, the current situation (including the health and welfare of yaks) and future perspectives in yak farming. Overall, increasing yak predation by predators, decreasing forage availability in the rangelands, and decreasing number of successors are the major threats to yak farming, while the market to sell yak products is the least threat. The factors causing forage shortage are specific to certain regions, e.g. competition with the horse population (west), cordyceps collection (central and west) and prohibited burning of shrubs around rangelands (east and central). In three regions (east, central, west,) the health and welfare of yaks was assessed using an adapted welfare protocol. In the visited yak herds, clinical issues, such as dirty body areas, integumentary lesions, ocular and nasal discharge, sings of diarrhoea, lameness and subclinical mastitis were virtually absent. A few instances of agonistic behaviour and flehming behaviour were observed. Yaks in the central and western regions exhibited more scratching and rubbing behaviour than did those in the eastern region, which may be associated with limited treatments against ectoparasites. Moreover, the traditional bull castration without use of analgesics was identified as a prominent welfare issues that calls for attention. Aside from several potential risk factors, the health and welfare status of yaks living in various regions of Bhutan was assessed as good at the time of visit. Although concerns around yak farming have increased over the years due to external factors, most herders (82%) wish their children to continue yak farming in the future. Nonetheless, over half of the herders (58%) and most livestock professionals (96%) think that the number of yak farming families will decline in the future. To get insight into how different stakeholders perceive the challenges and opportunities related to yak farming, six focus group interviews were organised with different stakeholders (herders and representatives of governmental bodies). Most problems and solutions identified in the focus group interviews differed between, and sometimes within, the stakeholder groups. There is a need for a multi-stakeholder dialogue aiming to discuss problems and solutions together with different stakeholders. The government should streamline socioeconomic development by supporting and improving basic facilities in yak farming villages (e.g. better access to communication, animal health services), pay attention to human-wildlife conflicts and forage shortage, and exp...