Callithrix geoffroyi

The white-headed marmoset (Callithrix geoffroyi), also known as the tufted-ear marmoset, Geoffroy's marmoset, or Geoffrey's marmoset, is a marmoset endemic to Brazil. It is known as the sagüi or sauim in Brazil. One of the more common callitrichids in captivity, many zoos keep and breed the species. In fact, some zoos have to use birth-control methods for them.