The common marmoset is a small new-world primate which lives in eastern Brazil, inhabitating the canopy of secondary rain forests and gallery forests.
Marmosets are diurnal monkeys, which are active from dawn to dusk.
While climbing even underneath perches and branches they use their claws. The claws are modified nails which are adapted for climbing on smooth tree trunks and branches. Scent marks are important signal which are produced with the chest and lower abdominal glands, genital glands and urine. This scent marks give information about the species, kin, sex, receptivity and even about dominance. Individual recognition is supposed.