The transhumant pastoralist all over the globe are making their livings on raising of livestock. But, it is found that their number is declining in recent days due to changing living conditions, impact of modernization as well as the changing environmental conditions. I particularly refer to the transhumant Brokpas of West Kameng and Tawang districts of Arunachal Pradesh, India. The number of these people is in declining trend in recent decades and thereby the number of livestock especially the yak population is also declining. The improved living conditions and the likelihood of living the lifestyle of neighbouring people has influenced them to change this arduous occupation...There may be number of factors responsible for their declining population which needs to be discussed at large. Hence, anyone who is working on such transhumant pastoralists may ponder upon.....