Abstract
In recent years, biomedical and life science research using the common marmoset (Callithrix jacchus ) has increased. However,
the husbandry of these small non-human primates is not yet fully established, and various problems can arise in the captive
settings. In this paper, I would like to present some of the cases, in which I have noticed, worried about, and tried to solve
these problems while caring for common marmosets as laboratory animals, resulting in publications, presentations at academic
conferences, and the acquisitions of research grants. All these activities have been carried out with the single-minded desire to
improve the quality of life (QOL) of captive common marmosets. As examples how my day-to-day husbandry work has led to the
research activities, I hope readers will find them useful.