Institute of Agriculture and Animal Science (IAAS) was established in 1972 in Rampur, Chitwan as a constituent institute of Tribhuvan University (TU), Nepal. The mission of the institute is to promote agricultural science and to train manpower for agricultural development focusing on teaching, research and dissemination of agricultural technologies. As government of Nepal decided to establish Agriculture and Forestry University (AFU) in 2010 in Rampur, Chitwan, AFU had taken the physical properties and other assets of IAAS before agreement of handover made between TU and AFU. Consequently, IAAS dean office was shifted to Kathmandu in 2011 and has been executing its activities as a dean's contact office situating in Sanepa, Lalitpur to date.
Later on, the post graduate program of IAAS was also shifted in Kathmandu in 2013 with the name of Post Graduate Campus in RECAST building of TU in Kirtipur. In addition to the RECAST building, classes are also going on in some other classrooms of TU. At present, the institute is running Master of Science in Agriculture (M.Sc.Ag.) in three departments, Master of Science in Animal Science (M.Sc.An.Sc.) in two departments, Master of Veterinary Science (M.V.Sc.) in two departments and also the Ph. D. program in some departments. Further, it is planning to run the PG program in some other departments also from coming academic year.