Any of various South American monkeys of the genera Saguinus and Leontopithecus, obtaining silky fur along with a nonprehensile tail: quite a few species are threatened or endangered.: See also pinche2, golden lion tamarin. Interested in a more compact kind of monkey? Possibly a standard marmoset monkey, often known as https://exoticpetsworldwide.com/product/buy-tamarin-monkeys-online/