Scientific name: Marmoset. Callitrichidae, common marmoset. Also known as thumb monkeys, Marmoset is a kind of small non-human primates from South America amazon rainforest. Compared with other non-human primates, it possesses the benefits of small size, short sexual maturity and pregnancy period and obedient characters for easy laboratory breeding, and shares strong genetic similarities with humans, with huge medical science research foreground. Marmoset is suitable for reproductive physiological research, contraceptive drug research, hepatitis virus A research and parasitic diseases research.