Manas national park, a World Heritage Site had a healthy population of rhino and swamp deer. Located in the foothills of eastern Himalaya biodiversity hotspot, Manas was known for its rich biodiversity. A decade long ethno-political violence in the late 1980s had devastation in the landscape and all rhinos and swamp deer were killed by poachers. The peace was restored in 2003 but the UNESCO placed Manas as World Heritage site “in danger”. Bringing back rhinos and swamp deer were among the two important conditions put forward by UNESCO to retain Manas as World Heritage Site again. A series of conservation translocation of rhino and swamp deer from other distribution ranges were carried out by WTI- IFAW and local government. The first rhino translocation took placed in 2006 when a rescued rhino calf from Kaziranga was rehabilitated in Manas. Since then a total 20 hand-raised rhino calves (male: female = 2:3) were translocated in seven batches till 2021. Another wild-to-wild rhino translocation programme was also initiated by Government of Assam to restore the rhino population. On the other hand, a total of 36 individuals of eastern swamp deer were translocated in two batches in 2014 and 2017 from Kaziranga. Both these translocated species did very well, breed and today Manas has a healthy population of about 50 rhinos and 150 swamp deer. Thus conservation translocation played a valuable role to recovery of these two threatened species and subsequently UNESCO has retained Manas as a World Heritage Site again.